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k Digits Early discovery with at least 25 digits Who When
1 39 2127 - 1 Édouard Lucas 10 Jan 1876
2-7 - No reliable information - -
8 26 8 • 1025 + 19510172733 + d, d = 0, 6, 8, 14, 18, 20, 24, 26 Tony Forbes 1993
9 30 12 • 1028 + 14884968491321 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Tony Forbes 1994
10 30 12 • 1028 + 14884968491321 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Tony Forbes 1994
11 27 495064300630708278713578451 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 A.O.L. Atkin 10 Jun 1997
12 27 495064300630708278713578451 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42 A.O.L. Atkin 10 Jun 1997
13 29 13844218031395056678684698323 + d, d = 0, 4, 6, 10, 16, 18, 24, 28, 30, 34, 40, 46, 48 Tony Forbes 01 Oct 1999
14 30 999999999962618227626700812281 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42, 48, 50 Jörg Waldvogel & Peter Leikauf 23 Nov 2000
15 30 999999999962618227626700812281 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42, 48, 50, 56 Jörg Waldvogel & Peter Leikauf 23 Nov 2000
16 26 10252256693298561414756287 + d, d = 0, 2, 6, 12, 14, 20, 26, 30, 32, 36, 42, 44, 50, 54, 56, 60 Jens Kruse Andersen 19 Oct 2004
17 25 4413937932023165100037481 + d, d = 0, 6, 8, 12, 18, 20, 26, 32, 36, 38, 42, 48, 50, 56, 60, 62, 66 Jaroslaw Wroblewski 09 Dec 2008
18 25 2845372542509911868266807 + d, d = 0, 4, 10, 12, 16, 22, 24, 30, 36, 40, 42, 46, 52, 54, 60, 64, 66, 70 Jörg Waldvogel & Peter Leikauf 13 Nov 2000
19 27 138433730977092118055599751677 + d,
d = 0, 6, 10, 16, 18, 22, 28, 30, 36, 42, 46, 48, 52, 58, 60, 66, 70, 72, 76		 Raanan Chermoni & Jaroslaw Wroblewski 09 Feb 2011
20 28 3941119827895253385301920029 + d,
d = 0, 2, 8, 12, 14, 18, 24, 30, 32, 38, 42, 44, 50, 54, 60, 68, 72, 74, 78, 80		 Raanan Chermoni & Jaroslaw Wroblewski 24 Jun 2014
21 29 39433867730216371575457664399 + d,
d = 0, 2, 8, 12, 14, 18, 24, 30, 32, 38, 42, 44, 50, 54, 60, 68, 72, 74, 78, 80, 84		 Raanan Chermoni & Jaroslaw Wroblewski 08 Jan 2015

k Digits Early discovery with at least 30 digits Who When
1 39 2127 - 1 Édouard Lucas 10 Jan 1876
2-5 - No reliable information - -
6 30 1029 + 77882127 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes 1993
7 30 11 • 1028 + 68258240409 + d, d = 0, 2, 8, 12, 14, 18, 20 Tony Forbes 1995
8 34 9 • 1033 + 1931578898957 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Tony Forbes 1994
9 30 12 • 1028 + 14884968491321 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Tony Forbes 1994
10 30 12 • 1028 + 14884968491321 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Tony Forbes 1994
11 30 28961984187 • 53# + 495611 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Warut Roonguthai 11 Oct 1997
12 33 244057739913 • 59# + 15840941 + d, d = 0, 6, 10, 12, 16, 22, 24, 30, 34, 36, 40, 42 Radek Naleczynski 16 Jan 1999
13 30 999999999962618227626700812281 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42, 48 Jörg Waldvogel & Peter Leikauf 23 Nov 2000
14 30 999999999962618227626700812281 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42, 48, 50 Jörg Waldvogel & Peter Leikauf 23 Nov 2000
15 30 999999999962618227626700812281 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42, 48, 50, 56 Jörg Waldvogel & Peter Leikauf 23 Nov 2000
16 31 1003234871202624616703163933853 + d, d = 0, 4, 6, 10, 16, 18, 24, 28, 30, 34, 40, 46, 48, 54, 58, 60 Roger Thompson 09 Aug 2012
17 30 100845391935878564991556707107 + d, d = 0, 2, 6, 12, 14, 20, 24, 26, 30, 36, 42, 44, 50, 54, 56, 62, 66 Roger Thompson 19 Feb 2013
18 - - - -
19 30 138433730977092118055599751677 + d,
d = 0, 4, 6, 10, 16, 22, 24, 30, 34, 36, 42, 46, 52, 60, 64, 66, 70, 72, 76		 Raanan Chermoni & Jaroslaw Wroblewski 08 Oct 2015
20 30 111286948968140923889225384099 + d,
d = 0, 2, 8, 12, 14, 18, 24, 30, 32, 38, 42, 44, 50, 54, 60, 68, 72, 74, 78, 80		 Raanan Chermoni & Jaroslaw Wroblewski 12 Aug 2015
21 30 138433730977092118055599751669 + d,
d = 0, 2, 8, 12, 14, 18, 24, 30, 32, 38, 42, 44, 50, 54, 60, 68, 72, 74, 78, 80, 84		 Raanan Chermoni & Jaroslaw Wroblewski 08 Oct 2015

k Digits Early discovery with at least 35 digits Who When
1 39 2127 - 1 Édouard Lucas 10 Jan 1876
2-5 - No reliable information - -
6 43 5 • 1042 + 1210414367 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes 1993
7 37 22 • 1035 + 103596448506361 + d, d = 0, 2, 6, 8, 12, 18, 20 Tony Forbes 1995
8 51 9 • 1050 + 3219584035187 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Tony Forbes 1994
9 37 22 • 1035 + 111245519078161 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Tony Forbes 1995
10 40 22 • 1038 + 2241278889512317 + d, d = 0, 2, 6, 12, 14, 20, 24, 26, 30, 32 Tony Forbes 1996
11 44 3676296453875 • 79# + 10527733922591 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn 04 Sep 2001
12 42 5027317106963 • 73# + 1418575498567 + d, d = 0, 6, 10, 12, 16, 22, 24, 30, 34, 36, 40, 42 Norman Luhn 05 Nov 2001
13 46 381955327397348 • 79# + 18393209 + d, d = 0, 2, 8, 14, 18, 20, 24, 30, 32, 38, 42, 44, 48 Norman Luhn 28 Dec 2007
14 46 381955327397348 • 79# + 18393209 + d, d = 0, 2, 8, 14, 18, 20, 24, 30, 32, 38, 42, 44, 48, 50 Norman Luhn 28 Dec 2007
15 35 10004646546202610858599716515809907 + d, d = 0, 2, 6, 12, 14, 20, 24, 26, 30, 36, 42, 44, 50, 54, 56 Roger Thompson 04 Sep 2012
16 35 322255 • 73# + 1354238543317302647 + d, d = 0, 2, 6, 12, 14, 20, 26, 30, 32, 36, 42, 44, 50, 54, 56, 60 Roger Thompson 18 Nov 2016

k Digits Early discovery with at least 40 digits Who When
1 44 (2148 + 1) / 17 Aimé Ferrier 1951
2-5 - No reliable information - -
6 43 5 • 1042 + 1210414367 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes 1993
7 54 15 • 1052 + 8496272339051 + d, d = 0, 2, 6, 8, 12, 18, 20 Tony Forbes 1995
8 51 9 • 1050 + 3219584035187 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Tony Forbes 1994
9 40 22 • 1038 + 632949030380167 + d, d = 0, 2, 6, 12, 14, 20, 24, 26, 30 Tony Forbes 1996
10 40 22 • 1038 + 2241278889512317 + d, d = 0, 2, 6, 12, 14, 20, 24, 26, 30, 32 Tony Forbes 1996
11 44 3676296453875 • 79# + 10527733922591 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn 04 Sep 2001
12 42 5027317106963 • 73# + 1418575498567 + d, d = 0, 6, 10, 12, 16, 22, 24, 30, 34, 36, 40, 42 Norman Luhn 05 Nov 2001
13 46 381955327397348 • 79# + 18393209 + d, d = 0, 2, 8, 14, 18, 20, 24, 30, 32, 38, 42, 44, 48 Norman Luhn 28 Dec 2007
14 46 381955327397348 • 79# + 18393209 + d, d = 0, 2, 8, 14, 18, 20, 24, 30, 32, 38, 42, 44, 48, 50 Norman Luhn 28 Dec 2007
15 40 33554294028531569 • 61# + 57800747 + d, d = 0, 2, 6, 12, 14, 20, 26, 30, 32, 36, 42, 44, 50, 54, 56 Norman Luhn 25 Jan 2017

k Digits Early discovery with at least 45 digits Who When
1 79 180 • (2127 − 1)2 + 1 J. C. P. Miller & D. J. Wheeler 10 Nov 1951
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 54 15 • 1052 + 8496272339051 + d, d = 0, 2, 6, 8, 12, 18, 20 Tony Forbes 1995
8 51 9 • 1050 + 3219584035187 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Tony Forbes 1994
9 50 74840399185 • 101# + 1277 + d, d = 0, 2, 6, 12, 14, 20, 24, 26, 30 Warut Roonguthai 6 Oct 1997
10 50 390868699256 • 101# + 258101 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Radek Naleczynski 16 Jan 1999
11 47 946772106455 • 90# + 872141 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Jens Kruse Andersen 12 Jul 2003
12 50 8486221 • 107# + 4549290807806861 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42 Dirk Augustin & Jens Kruse Andersen 03 Jun 2006
13 46 381955327397348 • 79# + 18393209 + d, d = 0, 2, 8, 14, 18, 20, 24, 30, 32, 38, 42, 44, 48 Norman Luhn 28 Dec 2007
14 46 381955327397348 • 79# + 18393209 + d, d = 0, 2, 8, 14, 18, 20, 24, 30, 32, 38, 42, 44, 48, 50 Norman Luhn 28 Dec 2007

k Digits Early discovery with at least 50 digits Who When
1 79 180 • (2127 − 1)2 + 1 J. C. P. Miller & D. J. Wheeler 10 Nov 1951
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 54 15 • 1052 + 8496272339051 + d, d = 0, 2, 6, 8, 12, 18, 20 Tony Forbes 1995
8 51 9 • 1050 + 3219584035187 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Tony Forbes 1994
9 50 74840399185 • 101# + 1277 + d, d = 0, 2, 6, 12, 14, 20, 24, 26, 30 Warut Roonguthai 6 Oct 1997
10 50 390868699256 • 101# + 258101 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Radek Naleczynski 16 Jan 1999
11 52 11450665899501 • 101# + 39058751 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn 03 Aug 2003
12 50 8486221 • 107# + 4549290807806861 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42 Dirk Augustin & Jens Kruse Andersen 03 Jun 2006
13 50 14815550 • 107# + 4385574275277311 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42, 48 Roger Thompson 05 Febr 2013
14 50 14815550 • 107# + 4385574275277311 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42, 48, 50 Roger Thompson 05 Febr 2013

k Digits Early discovery with at least 55 digits Who When
1 79 180 • (2127 − 1)2 + 1 J. C. P. Miller & D. J. Wheeler 10 Nov 1951
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 57 582994762600347672560616756460401857268344059297139419451 + d, d = 0, 2, 6, 8, 12, 18, 20 A.O.L. Atkin 1996
8 57 582994762600347672560616756460401857268344059297139419451 + d, d = 0, 2, 6, 8, 12, 18, 20, 26 A.O.L. Atkin 1996
9 55 82912513 • 120# + 271263511153489 + d, d = 0, 4, 10, 12, 18, 22, 24, 28, 30 Norman Luhn 22 Nov 2000
10 58 172831780223 • 120# + 10527733922591 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Norman Luhn 23 August 2001
11 63 92119245478633 • 130# + 21816911 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn 25 Dec 2003
12 59 78989413043158 • 109# + 38458151 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42 Norman Luhn 18 Jan 2010
13 61 4135997219394611 • 110# + 117092849 + d, d = 0, 2, 12, 14, 18, 20, 24, 30, 32, 38, 42, 44, 48 Norman Luhn 23 Mar 2017

k Digits Early discovery with at least 60 digits Who When
1 79 180 • (2127 − 1)2 + 1 J. C. P. Miller & D. J. Wheeler 10 Nov 1951
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 75 426955143694213197848463574726328636553002998029907759380111141003679237691 + d,
d = 0, 2, 6, 8, 12, 18, 20		 A.O.L. Atkin 1997
8 60 234259608 • 131# + 1277 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Warut Roonguthai 22 Sep 1997
9 110 388793398651 • 250# + 1042090781 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Norman Luhn 23 Feb 2001
10 61 504610004802 • 130# + 872141 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Jens Kruse Andersen 12 Jul 2003
11 63 92119245478633 • 130# + 21816911 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn 25 Dec 2003
12 61 59125383480754 • 113# + 12455557957 + d, d = 0, 6, 10, 12, 16, 22, 24, 30, 34, 36, 40, 42 Michael Stocker 09 Sep 2013
13 61 4135997219394611 • 110# + 117092849 + d, d = 0, 2, 12, 14, 18, 20, 24, 30, 32, 38, 42, 44, 48 Norman Luhn 23 Mar 2017

k Digits Early discovery with at least 65 digits Who When
1 79 180 • (2127 − 1)2 + 1 J. C. P. Miller & D. J. Wheeler 10 Nov 1951
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 75 426955143694213197848463574726328636553002998029907759380111141003679237691 + d,
d = 0, 2, 6, 8, 12, 18, 20		 A.O.L. Atkin 1997
8 93 49507337255 • 199# + 1277 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Michael Bell 17 Sep 2000
9 110 388793398651 • 250# + 1042090781 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Norman Luhn 23 Feb 2001
10 70 34101658 • 157# + 164826429367331 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Hans Rosenthal & Jens Kruse Andersen 20 Feb 2004
11 70 34101658 • 157# + 164826429367331 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Hans Rosenthal & Jens Kruse Andersen 20 Feb 2004
12 66 467756 • 151# + 193828829641176461 + d, d = 0, 6, 10, 12, 16, 22, 24, 30, 34, 36, 40, 42 Roger Thompson 20 May 2014
13 66 9985637467 • 139# + 3629868888791261 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42, 48 Roger Thompson 01 Oct 2021

k Digits Early discovery with at least 70 digits Who When
1 79 180 • (2127 − 1)2 + 1 J. C. P. Miller & D. J. Wheeler 10 Nov 1951
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 75 426955143694213197848463574726328636553002998029907759380111141003679237691 + d,
d = 0, 2, 6, 8, 12, 18, 20		 A.O.L. Atkin 1997
8 93 49507337255 • 199# + 1277 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Michael Bell 17 Sep 2000
9 110 388793398651 • 250# + 1042090781 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Norman Luhn 23 Feb 2001
10 70 34101658 • 157# + 164826429367331 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Hans Rosenthal & Jens Kruse Andersen 20 Feb 2004
11 70 34101658 • 157# + 164826429367331 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Hans Rosenthal & Jens Kruse Andersen 20 Feb 2004
12 75 613176722801194 • 151# + 177321217 + d, d = 0, 6, 10, 12, 16, 22, 24, 30, 34, 36, 40, 42 Michael Stocker, Primo 30 Sep 2014

k Digits Early discovery with at least 75 digits Who When
1 79 180 • (2127 − 1)2 + 1 J. C. P. Miller & D. J. Wheeler 10 Nov 1951
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 75 426955143694213197848463574726328636553002998029907759380111141003679237691 + d, d = 0, 2, 6, 8, 12, 18, 20 A.O.L. Atkin 1997
8 93 49507337255 • 199# + 1277 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Michael Bell 17 Sep 2000
9 110 388793398651 • 250# + 1042090781 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Norman Luhn 23 Feb 2001
10 103 72613488698235 • 227# + 39058751 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Norman Luhn 11 Apr 2004
11 104 24698258 • 239# + 28606476153371 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn & Jens Kruse Andersen 18 Aug 2004
12 75 613176722801194 • 151# + 177321217 + d, d = 0, 6, 10, 12, 16, 22, 24, 30, 34, 36, 40, 42 Michael Stocker, Primo 30 Sep 2014

k Digits Early discovery with at least 80 digits Who When
1 157 2521 − 1 Raphael Mitchel Robinson 30 Jan 1952
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 80 61502812817 • 173# + 5639 + d, d = 0, 2, 8, 12, 14, 18, 20 Warut Roonguthai 06 Oct 1997
8 93 49507337255 • 199# + 1277 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Michael Bell 17 Sep 2000
9 110 388793398651 • 250# + 1042090781 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Norman Luhn 23 Feb 2001
10 103 72613488698235 • 227# + 39058751 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Norman Luhn 11 Apr 2004
11 104 24698258 • 239# + 28606476153371 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn & Jens Kruse Andersen 18 Aug 2004
12 108 13243795731372733191902494675154142263612189966992593522251560981597803197621024152571147501
+ 27407861785763183 • 229# + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42		 Peter Kaiser, David Stevens, Polysieve, PFGW, Primo 23 Sep 2019

k Digits Early discovery with at least 85 digits Who When
1 157 2521 − 1 Raphael Mitchel Robinson 30 Jan 1952
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 92 4300308165 • 199# + 5639 + d, d = 0, 2, 8, 12, 14, 18, 20 Radoslaw Naleczynski 31 Dec 1998
8 93 49507337255 • 199# + 1277 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Michael Bell 17 Sep 2000
9 110 388793398651 • 250# + 1042090781 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Norman Luhn 23 Feb 2001
10 103 72613488698235 • 227# + 39058751 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Norman Luhn 11 Apr 2004
11 104 24698258 • 239# + 28606476153371 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn & Jens Kruse Andersen 18 Aug 2004
12 108 13243795731372733191902494675154142263612189966992593522251560981597803197621024152571147501
+ 27407861785763183 • 229# + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42		 Peter Kaiser, David Stevens, Polysieve, PFGW, Primo 23 Sep 2019

k Digits Early discovery with at least 90 digits Who When
1 157 2521 − 1 Raphael Mitchel Robinson 30 Jan 1952
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 92 4300308165 • 199# + 5639 + d, d = 0, 2, 8, 12, 14, 18, 20 Radoslaw Naleczynski 31 Dec 1998
8 93 49507337255 • 199# + 1277 + d, d = 0, 2, 6, 12, 14, 20, 24, 26 Michael Bell 17 Sep 2000
9 110 388793398651 • 250# + 1042090781 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Norman Luhn 23 Feb 2001
10 103 72613488698235 • 227# + 39058751 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Norman Luhn 11 Apr 2004
11 104 24698258 • 239# + 28606476153371 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn & Jens Kruse Andersen 18 Aug 2004
12 108 13243795731372733191902494675154142263612189966992593522251560981597803197621024152571147501
+ 27407861785763183 • 229# + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42		 Peter Kaiser, David Stevens, Polysieve, PFGW, Primo 23 Sep 2019

k Digits Early discovery with at least 95 digits Who When
1 157 2521 − 1 Raphael Mitchel Robinson 30 Jan 1952
2-5 - No reliable information - -
6 133 2 • 10132 + 75543532187 + d, d = 0, 4, 6, 10, 12, 16 Tony Forbes Apr 1994
7 95 24246571753 • 211# + 5639 + d, d = 0, 2, 8, 12, 14, 18, 20 Radoslaw Naleczynski 31 Dec 1998
8 110 388793398651 • 250# + 1042090781 + d, d = 0, 2, 6, 8, 12, 18, 20, 26 Norman Luhn 23 Feb 2001
9 110 388793398651 • 250# + 1042090781 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30 Norman Luhn 23 Feb 2001
10 103 72613488698235 • 227# + 39058751 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32 Norman Luhn 11 Apr 2004
11 104 24698258 • 239# + 28606476153371 + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 Norman Luhn & Jens Kruse Andersen 18 Aug 2004
12 108 13243795731372733191902494675154142263612189966992593522251560981597803197621024152571147501
+ 27407861785763183 • 229# + d, d = 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36, 42		 Peter Kaiser, David Stevens, Polysieve, PFGW, Primo 23 Sep 2019