k |
Digits |
Early discovery with at least 1,000 digits |
Who |
When |
1 |
1332 |
24432 − 1 |
Alexander Hurwitz |
3 Nov 1961 |
2 |
1040 |
256200945 • 23426 ± 1 |
Arthur Oliver Lonsdale Atkin & Neil W. Rickert |
Dec 1980 |
3 |
1083 |
437850590 • (23567 − 21189) − 6 • 21189 − 5 + d, d = 0, 4, 6 |
Tony Forbes |
04 Dec 1996 |
4 |
1004 |
76912895956636885 • (23279 − 21093) − 6 • 21093 − 7 + d, d = 0, 2, 6, 8 |
Tony Forbes |
16 Sep 1998 |
5 |
1034 |
31969211688 • 2399# + 16061 + d, d = 0, 2, 6, 8, 12 |
Norman Luhn |
30 Jul 2002 |
6 |
1037 |
28993093368077 • 2399# + 19417 + d, d = 0, 4, 6, 10, 12, 16 |
Norman Luhn |
14 Mar 2016 |
7 |
1002 |
113225039190926127209 • 2339# / 57057 + 1 + d, d = 0, 2, 6, 8, 12, 18, 20 |
Peter Kaiser |
27 Jan 2021 |
k |
Digits |
Early discovery with at least 2,000 digits |
Who |
When |
1 |
2917 |
29689 − 1 |
Donald B. Gillies |
11 May 1963 |
2 |
2003 |
260497545 • 26625 ± 1 |
Arthur Oliver Lonsdale Atkin |
Dec 1984 |
3 |
2129 |
205702716 • 4973# / 35 − 1 + d, d = 0, 2, 6 |
Rosenthal, Jobling |
17 Dec 2000 |
4 |
2058 |
4104082046 • 4799# + 5651 + d, d = 0, 2, 6, 8 |
Norman Luhn |
29 Apr 2005 |
5 |
2002 |
126831252923413 • 4657# / 273 + 1 + d, d = 0, 2, 6, 8, 12 |
Peter Kaiser |
8 Nov 2020 |
k |
Digits |
Early discovery with at least 3,000 digits |
Who |
When |
1 |
3376 |
211213 − 1 |
Donald B. Gillies |
2 Jun 1963 |
2 |
3389 |
1706595 • 211235 ± 1 |
John Brown, Landon Curt Noll, B. K. Parady, Gene Ward Smith, Joel F. Smith, Sergio E. Zarantonello |
7 Jun 1989 |
3 |
3153 |
813529138 • 1939938500 − 1 + d, d = 0, 2, 6 |
Norman Luhn |
13 Jul 2002 |
4 |
3024 |
43697976428649 • 29999 − 1 + d, d = 0, 2, 6, 8 |
Peter Kaiser |
26 Mar 2012 |
5 |
3344 |
585150568069684836 • 7757# / 85085 + 5 + d, d = 0, 2, 6, 8, 12 |
Peter Kaiser |
06 Mar 2022 |
k |
Digits |
Early discovery with at least 6,000 digits |
Who |
When |
1 |
6002 |
219937 − 1 |
Bryant Tuckerman |
4 Mar 1971 |
2 |
11713 |
242206083 • 238880 ± 1 |
H. K. Indlekofer & A. Járai |
Nov 1995 |
3 |
6223 |
5612052289 • 14489# / 5 − 1 + d, d = 0, 2, 6 |
Norman Luhn |
3 Jan 2008 |
4 |
10132 |
667674063382677 • 233608 − 1 + d, d = 0, 2, 6, 8 |
Peter Kaiser |
27 Feb 2019 |
k |
Digits |
Early discovery with at least 7,000 ... 9,000 digits |
Who |
When |
1 |
13395 |
244497 − 1 |
Harry Lewis Nelson & David Slowinski |
8 Apr 1979 |
2 |
11713 |
242206083 • 238880 ± 1 |
H. K. Indlekofer & A. Járai |
Nov 1995 |
3 |
10047 |
2072644824759 • 233333 − 1 + d, d = 0, 2, 6 |
Norman Luhn & François Morain |
Nov 2008 |
4 |
10132 |
667674063382677 • 233608 − 1 + d, d = 0, 2, 6, 8 |
Peter Kaiser |
27 Feb 2019 |