| rank | prime |
digits | who | when | comment |
|---|
| 1 | 2 · 59608685 + 1 |
1077892 |
g427 |
Oct 2014 |
Divides Phi(59608685, 2) |
| 2 | 2 · 23774109 + 1 |
1054127 |
g427 |
Oct 2014 |
Divides Phi(23774109, 2) |
| 3 | 2 · 11171168429 + 1 |
681817 |
g427 |
Sep 2014 |
Divides Phi(11171168429, 2) |
| 4 | 2 · 179294739 + 1 |
664004 |
g424 |
Nov 2011 |
Divides Phi(179294739, 2) |
| 5 | 2 · 10271164621 + 1 |
660397 |
g427 |
Sep 2014 |
Divides Phi(10271164621, 2) |
| 6 | 2 · 659233973 + 1 |
659544 |
g424 |
Mar 2015 |
Divides Phi(659233973, 2) |
| 7 | 2 · 191287901 + 1 |
656713 |
g424 |
Jan 2015 |
Divides Phi(191287901, 2) |
| 8 | 2 · 47346759 + 1 |
579816 |
g424 |
Jan 2011 |
Divides Phi(47346759, 2) |
| 9 | 2 · 191232149 + 1 |
529540 |
g424 |
Oct 2011 |
Divides Phi(191232149, 2) |
| 10 | 2 · 359192871 + 1 |
492804 |
g424 |
Nov 2014 |
Divides Phi(359192871, 2) |
| 11 | 2 · 839155785 + 1 |
455479 |
g424 |
Dec 2014 |
Divides Phi(839155785, 2) |
| 12 | 2 · 11171100961 + 1 |
408700 |
g427 |
Sep 2014 |
Divides Phi(11171100961, 2) |
| 13 | 2 · 1225199265 + 1 |
405813 |
g427 |
Jun 2017 |
Divides Phi(1225199265, 2) |
| 14 | 2 · 503145313 + 1 |
392574 |
g424 |
Nov 2014 |
Divides Phi(503145313, 2) |
| 15 | 2 · 1289994927 + 1 |
390204 |
g427 |
Jun 2017 |
Divides Phi(1289994927, 2) |
| 16 | 2 · 443141845 + 1 |
375380 |
g424 |
Nov 2014 |
Divides Phi(443141845, 2) |
| 17 | 2 · 1085987905 + 1 |
354767 |
g427 |
Sep 2014 |
Divides Phi(1085987905, 2) |
| 18 | 2 · 263140989 + 1 |
341188 |
g424 |
Mar 2011 |
Divides Phi(263140989, 2) |
| 19 | 2 · 467126775 + 1 |
338403 |
g425 |
Jan 2011 |
Divides Phi(467126775, 2) |
| 20 | 2 · 814783795 + 1 |
327723 |
g424 |
Nov 2014 |
Divides Phi(814783795, 2) |
Definitions and Notes