Wagstaff (probable) Primes
Term: (2p + 1) / 3 Exhaustive-search-table, see b = 2 Total: 44 Reference: PrimePages & Mersenneforum |
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Number | Digits | When | Who | Status on factordb |
PrimePages - ID |
---|---|---|---|---|---|
(215135397 + 1) / 3 | 4556209 | Jun 2021 | Ryan Propper | PRP | |
(213372531 + 1) / 3 | 4025533 | Sep 2013 | Ryan Propper | PRP | |
(213347311 + 1) / 3 | 4017941 | Sep 2013 | Ryan Propper | PRP | |
(24031399 + 1) / 3 | 1213572 | Feb 2010 | Tony Reix;Diepeveen-Underwood-Reix | PRP | |
(2986191 + 1) / 3 | 296873 | Jun 2008 | Vincent Diepeveen | PRP | |
(2374321 + 1) / 3 | 112682 | Dec 2000 | Henri & Renaud Lifchitz | PRP | |
(2269987 + 1) / 3 | 81274 | Oct 2000 | Henri & Renaud Lifchitz | PRP | |
(2267017 + 1) / 3 | 80380 | Sep 2000 | Henri & Renaud Lifchitz | PRP | |
(2141079 + 1) / 3 | 42469 | Sep 2000 | Henri & Renaud Lifchitz | PRP | |
(2138937 + 1) / 3 | 41824 | Oct 2023 | Andreas Enge; Paul Underwood; CM | Prime | 136562 |
(2127031 + 1) / 3 | 38240 | Jan 2023 | Paul Underwood; CM | Prime | 134830 |
(2117239 + 1) / 3 | 35292 | Aug 2022 | Ryan Propper; CM | Prime | 134282 |
(295369 + 1) / 3 | 28709 | Aug 2021 | Laurent Facq; Jared Asuncion; Bill Allombert | Prime | 132583 |
(283339 + 1) / 3 | 25088 | Sep 2014 | Tom Wu; Primo | Prime | 118512 |
(242737 + 1) / 3 | 12865 | Aug2007 | François Morain | Prime | 82071 |
(214479 + 1) / 3 | 4359 | Nov 2004 | David Broadhurst; Primo | Prime | 74683 |
(212391 + 1) / 3 | 3730 | May 1996 | François Morain | Prime | 27688 |
(211279 + 1) / 3 | 3395 | Jan 1998 | Preda Mihailescu | Prime | 28909 |
(210691 + 1) / 3 | 3218 | Oct 2004 | David Broadhurst; Primo | Prime | 74682 |
(210501 + 1) / 3 | 3161 | May 1996 | François Morain | Prime | 29287 |
(25807 + 1) / 3 | 1748 | 1998 | Preda Mihailescu | Prime | 72546 |
(23539 + 1) / 3 | 1065 | 1989 | François Morain | Prime | 54344 |
(22617 + 1) / 3 | 788 | Prime | |||
(21709 + 1) / 3 | 514 | Prime | |||
(2701 + 1) / 3 | 211 | Prime | |||
(2347 + 1) / 3 | 104 | Prime | |||
(2313 + 1) / 3 | 94 | Prime | |||
(2199 + 1) / 3 | 60 | Prime | |||
(2191 + 1) / 3 | 58 | Prime | |||
(2167 + 1) / 3 | 50 | Prime | |||
(2127 + 1) / 3 | 38 | Prime | |||
(2101 + 1) / 3 | 30 | Prime | |||
(279 + 1) / 3 | 24 | Prime | |||
(261 + 1) / 3 | 18 | Prime | |||
(243 + 1) / 3 | 13 | Prime | |||
(231 + 1) / 3 | 9 | Prime | |||
(223 + 1) / 3 | 7 | Prime | |||
(219 + 1) / 3 | 6 | Prime | |||
(217 + 1) / 3 | 5 | Prime | |||
(213 + 1) / 3 | 4 | Prime | |||
(211 + 1) / 3 | 3 | Prime | |||
(25 + 1) / 3 | 2 | Prime | |||
(27 + 1) / 3 | 2 | Prime | |||
(23 + 1) / 3 | 1 | Prime |