Wagstaff (probable) Primes Term: (2p + 1) / 3 Total: 44 Exhaustive-search-table, see b = 2 References: PrimePages • Mersenneforum
#	Number	Digits	When	Who	Status on factordb	PrimePages - ID
44	(215135397 + 1) / 3	4556209	Jun 2021	Ryan Propper	PRP
43	(213372531 + 1) / 3	4025533	Sep 2013	Ryan Propper	PRP
42	(213347311 + 1) / 3	4017941	Sep 2013	Ryan Propper	PRP
41	(24031399 + 1) / 3	1213572	Feb 2010	Tony Reix;Diepeveen-Underwood-Reix	PRP
40	(2986191 + 1) / 3	296873	Jun 2008	Vincent Diepeveen	PRP
39	(2374321 + 1) / 3	112682	Dec 2000	Henri & Renaud Lifchitz	PRP
38	(2269987 + 1) / 3	81274	Oct 2000	Henri & Renaud Lifchitz	PRP
37	(2267017 + 1) / 3	80380	Sep 2000	Henri & Renaud Lifchitz	PRP
36	(2141079 + 1) / 3	42469	Oct 2025	Henri & Renaud Lifchitz; Paul Underwood; CM	Prime	141182
35	(2138937 + 1) / 3	41824	Oct 2023	Andreas Enge; Paul Underwood; CM	Prime	136562
34	(2127031 + 1) / 3	38240	Jan 2023	Paul Underwood; CM	Prime	134830
33	(2117239 + 1) / 3	35292	Aug 2022	Ryan Propper; CM	Prime	134282
32	(295369 + 1) / 3	28709	Aug 2021	Laurent Facq; Jared Asuncion; Bill Allombert	Prime	132583
31	(283339 + 1) / 3	25088	Sep 2014	Tom Wu; Primo	Prime	118512
30	(242737 + 1) / 3	12865	Aug 2007	François Morain	Prime	82071
29	(214479 + 1) / 3	4359	Nov 2004	David Broadhurst; Primo	Prime	74683
28	(212391 + 1) / 3	3730	May 1996	François Morain	Prime	27688
27	(211279 + 1) / 3	3395	Jan 1998	Preda Mihailescu	Prime	28909
26	(210691 + 1) / 3	3218	Oct 2004	David Broadhurst; Primo	Prime	74682
25	(210501 + 1) / 3	3161	May 1996	François Morain	Prime	29287
24	(25807 + 1) / 3	1748	1998	Preda Mihailescu	Prime	72546
23	(23539 + 1) / 3	1065	1989	François Morain	Prime	54344
22	(22617 + 1) / 3	788			Prime
21	(21709 + 1) / 3	514			Prime
20	(2701 + 1) / 3	211			Prime
19	(2347 + 1) / 3	104			Prime
18	(2313 + 1) / 3	94			Prime
17	(2199 + 1) / 3	60			Prime
16	(2191 + 1) / 3	58			Prime
15	(2167 + 1) / 3	50			Prime
14	(2127 + 1) / 3	38			Prime
13	(2101 + 1) / 3	30			Prime
12	(279 + 1) / 3	24			Prime
11	(261 + 1) / 3	18			Prime
10	(243 + 1) / 3	13			Prime
9	(231 + 1) / 3	9			Prime
8	(223 + 1) / 3	7			Prime
7	(219 + 1) / 3	6			Prime
6	(217 + 1) / 3	5			Prime
5	(213 + 1) / 3	4			Prime
4	(211 + 1) / 3	3			Prime
3	(25 + 1) / 3	2			Prime
2	(27 + 1) / 3	2			Prime
1	(23 + 1) / 3	1			Prime