History for AP20
Primes   n's   Digits When Discoverer
( 3800687715 + 913281461 • n) • 53# + 1 0..19 30 14 Aug 2025 Norman Luhn
23 + 134181089232118748020 • 19# • n 0..19 29 1 Dec 2017 Wojciech Izykowski
3533531731191494525351461 + 61# • n 0..19 25 25 Apr 2014 Jaroslaw Wroblewski
21816168581655686541377 + 59# • n 0..19 23 7 Mar 2014 Jaroslaw Wroblewski
(24357343731 + 862728918 • n) • 31# + 1 0..19 22 20 Oct 2025 Norman Luhn
(26339827891 + 403710013 • n) • 31# + 1 0..19 22 30 Aug 2025 Norman Luhn
(29120613770 + 98829167 • n) • 31# + 1 0..19 22 16 Aug 2025 Norman Luhn
178284683588844176017 + 53# • n 0..19 21 20 Feb 2007 Jaroslaw Wroblewski
1925228725347080393 + 47# • n 1..20 20 8 Feb 2007 Jaroslaw Wroblewski
2962411312104427 + 185 • 41# • n 0..19 19 7 Feb 2007 Jaroslaw Wroblewski
2036800114407689 + 66 • 41# • n 0..19 18 7 Feb 2007 Jaroslaw Wroblewski
11735227242889999 + 43# • n 0..19 18 21 Dec 2006 Jaroslaw Wroblewski
9372688136871853 + 43# • n0..19 18 18 Dec 2006 Jaroslaw Wroblewski
(669956329 + 7563194 • n) • 23# + 10..19 18 2002 Markus Frind