Mersenne Prime Numbers

#2p-1DigitsDate DiscoveredDiscovered ByMethod / HardwarePerfect Number
122-11ancientancient21 · (22-1)
223-11ancientancient22 · (23-1)
325-12ancientancient24 · (25-1)
427-13ancientancient26 · (27-1)
5213-141456anonymoustrial division212 · (213-1)
6217-161588Catalditrial division216 · (217-1)
7219-161588Catalditrial division218 · (219-1)
8231-1101772EulerEnhanced trial division230 · (231-1)
9261-1191883PervushinLucas sequences260 · (261-1)
10289-1271911PowersLucas sequences288 · (289-1)
112107-1331914PowersLucas sequences2106 · (2107-1)
122127-1391876LucasLucas sequences2126 · (2127-1)
132521-11571952-Jan-30RobinsonL-L / SWAC2520 · (2521-1)
142607-11831952-Jan-30RobinsonL-L / SWAC2606 · (2607-1)
1521279-13861952-Jun-25RobinsonL-L / SWAC21278 · (21279-1)
1622203-16641952-Oct-07RobinsonL-L / SWAC22202 · (22203-1)
1722281-16871952-Oct-09RobinsonL-L / SWAC22280 · (22281-1)
1823217-19691957-Sep-08RieselL-L / BESK23216 · (23217-1)
1924253-112811961-Nov-03HurwitzL-L / IBM 709024252 · (24253-1)
2024423-113321961-Nov-03HurwitzL-L / IBM 709024422 · (24423-1)
2129689-129171963-May-11GilliesL-L / ILLIAC II29688 · (29689-1)
2229941-129931963-May-16GilliesL-L / ILLIAC II29940 · (29941-1)
23211213-133761963-Jun-02GilliesL-L / ILLIAC II211212 · (211213-1)
24219937-160021971-Mar-04TuckermanL-L / IBM 360/91219936 · (219937-1)
25221701-165331978-Oct-30Noll & NickelL-L / CDC Cyber 174221700 · (221701-1)
26223209-169871979-Feb-09NollL-L / CDC Cyber 174223208 · (223209-1)
27244497-1133951979-Apr-08Nelson & SlowinskiL-L / Cray 1244496 · (244497-1)
28286243-1259621982-Sep-25SlowinskiL-L / Cray 1286242 · (286243-1)
292110503-1332651988-Jan-28Colquitt & WelshL-L / NEC SX-22110502 · (2110503-1)
302132049-1397511983-Sep-20SlowinskiL-L / Cray X-MP2132048 · (2132049-1)
312216091-1650501985-Sep-06SlowinskiL-L / Cray X-MP/242216090 · (2216091-1)
322756839-12278321992-Feb-19Slowinski, Gage & HarwellL-L / Maple on Harwell Lab Cray-22756838 · (2756839-1)
332859433-12587161994-Jan-10Slowinski & GageL-L / Cray C902859432 · (2859433-1)
3421257787-13786321996-Sep-03Slowinski & GageL-L / Cray T9421257786 · (21257787-1)
3521398269-14209211996-Nov-13Armengaud, Woltman et. al. GIMPSL-L / Prime95 on 90 MHz Pentium PC21398268 · (21398269-1)
3622976221-18959321997-Aug-24Spence, Woltman et. al. GIMPSL-L / Prime95 on 100 MHz Pentium PC22976220 · (22976221-1)
3723021377-19095261998-Jan-27Clarkson, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 200 MHz Pentium PC23021376 · (23021377-1)
3826972593-120989601999-Jun-01Hajratwala, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 350 MHz Pentium II IBM Aptiva26972592 · (26972593-1)
39213466917-140539462001-Nov-14Cameron, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 800 MHz Athlon Thunderbird213466916 · (213466917-1)
40220996011-163204302003-Nov-17Shafer, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 2 GHz Dell Dimension220996010 · (220996011-1)
41224036583-172357332004-May-15Findley, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 2.4 GHz Pentium 4 PC224036582 · (224036583-1)
42225964951-178162302005-Feb-18Nowak, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 2.4 GHz Pentium 4 PC225964950 · (225964951-1)
43230402457-191520522005-Dec-15Cooper, Boone, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 2 GHz Pentium 4 PC230402456 · (230402457-1)
44232582657-198083582006-Sep-04Cooper, Boone, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 3 GHz Pentium 4 PC232582656 · (232582657-1)
45237156667-1111852722008-Sep-06Elvenich, Woltman, Kurowski, et al. GIMPS & PrimeNetL-L / Prime95 on 2.83 GHz Core 2 Duo PC237156666 · (237156667-1)
46242643801-1128370642009-Apr-12Strindmo, Woltman, Kurowski, et al. GIMPS & PrimeNetL-L / Prime95 on 3 GHz Core 2 PC242643800 · (242643801-1)
47243112609-1129781892008-Aug-23Smith, Woltman, Kurowski, et al. GIMPS & PrimeNetL-L / Prime95 on Dell Optiplex 745243112608 · (243112609-1)
48257885161-1174251702013-Jan-25Cooper, Woltman, Kurowski, et al. GIMPS & PrimeNetL-L / Prime95 v27.7 on Intel Core2 Duo E8400 @ 3.00GHz257885160 · (257885161-1)
49*274207281-1223386182016-Jan-07C. Cooper, G. Woltman, S. Kurowski, A. Blosser, et al.L-L / Prime95 on Intel i7-4790 @ 3.60GHz274207280 · (274207281-1)
50*277232917-1232494252017-Dec-26Jonathan Pace, George Woltman, Scott Kurowski, Aaron Blosser, et al.L-L / Prime95 on Intel Core i5-6600277232916 · (277232917-1)
51*282589933-1248620482018-Dec-07Patrick Laroche, George Woltman, Scott Kurowski, Aaron Blosser, et al.L-L / Prime95 on Intel Core i5-4590T282589932 · (282589933-1)
* Provisional ranking, not all candidates between M57985273 and M82589933 have been eliminated

Distribution graph of Mersenne Primes found by GIMPS

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