Wagstaff (probable) Primes
Term: (2p + 1) / 3
Exhaustive-search-table, see b = 2
Total: 44
Reference: PrimePages & Mersenneforum
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 Oct 2025 Henri & Renaud Lifchitz; Paul Underwood; CM Prime 141182
(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