k Digits Early discovery with at least 10,000 digits to given pattern Who When
1 13395 244497 − 1 Harry Lewis Nelson, David Slowinski 8 Apr 1979
2 11713 242206083 • 238880 ± 1 Karl-Heinz Indlekofer, Antal Járai Nov 1995
3 10047 2072644824759 • 233333 − 1 + d d = 0, 2, 6 Norman Luhn, François Morain 17 Nov 2008
3 16737 6521953289619 • 255555 − 5 + d d = 0, 4, 6 Peter Kaiser 30 Apr 2013
4 10132 667674063382677 • 233608 − 1 + d d = 0, 2, 6, 8 Peter Kaiser 27 Feb 2019

k Digits Early discovery with at least 20,000 digits to given pattern Who When
1 25962 286243 − 1 David Slowinski 25 Sep 1982
2 20008 1693965 • 266443 ± 1 Giovanni La Barbera, Paul Jobling, Yves Gallot 26 Sep 2000
3 20008 4111286921397 • 266420 − 1 + d d = 0, 2, 6 Peter Kaiser 24 Apr 2019
3 20183 4404139952163 • 267002 − 5 + d d = 0, 4, 6 Serge Batalov 11 Jul 2024

k Digits Early discovery with at least 30,000 digits Who When
1 65050 2216091 − 1 David Slowinski 1 Sep 1985
2 32220 318032361 • 2107001 ± 1 David Underbakke, Phil Carmody 18 May 2001

k Digits Early discovery with at least 40,000 / 50,000 digits Who When
1 65050 2216091 − 1 David Slowinski 1 Sep 1985
2 51090 33218925 • 2169690 ± 1 Daniel Papp 28 Sep 2002

k Digits Early discovery with at least 60,000 digits Who When
1 65050 2216091 − 1 David Slowinski 1 Sep 1985
2 100355 65516468355 • 2333333 ± 1 Peter Kaiser, PrimeGrid 15 Aug 2009

k Digits Early discovery with at least 70,000 ... 90,000 digits Who When
1 227832 2756839 − 1 David Slowinski, Paul Gage 19 Feb 1992
2 100355 65516468355 • 2333333 ± 1 Peter Kaiser, PrimeGrid 15 Aug 2009