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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)
132521-1157January 30 1952RobinsonL-L / SWAC2520 · (2521-1)
142607-1183January 30 1952RobinsonL-L / SWAC2606 · (2607-1)
1521,279-1386June 25 1952RobinsonL-L / SWAC21,278 · (21,279-1)
1622,203-1664October 7 1952RobinsonL-L / SWAC22,202 · (22,203-1)
1722,281-1687October 9 1952RobinsonL-L / SWAC22,280 · (22,281-1)
1823,217-1969September 8 1957RieselL-L / BESK23,216 · (23,217-1)
1924,253-11,281November 3 1961HurwitzL-L / IBM 709024,252 · (24,253-1)
2024,423-11,332November 3 1961HurwitzL-L / IBM 709024,422 · (24,423-1)
2129,689-12,917May 11 1963GilliesL-L / ILLIAC II29,688 · (29,689-1)
2229,941-12,993May 16 1963GilliesL-L / ILLIAC II29,940 · (29,941-1)
23211,213-13,376June 2 1963GilliesL-L / ILLIAC II211,212 · (211,213-1)
24219,937-16,002March 4 1971TuckermanL-L / IBM 360/91219,936 · (219,937-1)
25221,701-16,533October 30 1978Noll & NickelL-L / CDC Cyber 174221,700 · (221,701-1)
26223,209-16,987February 9 1979NollL-L / CDC Cyber 174223,208 · (223,209-1)
27244,497-113,395April 8 1979Nelson & SlowinskiL-L / Cray 1244,496 · (244,497-1)
28286,243-125,962September 25 1982SlowinskiL-L / Cray 1286,242 · (286,243-1)
292110,503-133,265January 28 1988Colquitt & WelshL-L / NEC SX-22110,502 · (2110,503-1)
302132,049-139,751September 20 1983SlowinskiL-L / Cray X-MP2132,048 · (2132,049-1)
312216,091-165,050September 6 1985SlowinskiL-L / Cray X-MP/242216,090 · (2216,091-1)
322756,839-1227,832February 19 1992Slowinski, Gage & HarwellL-L / Maple on Harwell Lab Cray-22756,838 · (2756,839-1)
332859,433-1258,716January 10 1994Slowinski & GageL-L / Cray C902859,432 · (2859,433-1)
3421,257,787-1378,632September 3 1996Slowinski & GageL-L / Cray T9421,257,786 · (21,257,787-1)
3521,398,269-1420,921November 13 1996Armengaud, Woltman et. al. GIMPSL-L / Prime95 on 90 MHz Pentium PC21,398,268 · (21,398,269-1)
3622,976,221-1895,932August 24 1997Spence, Woltman et. al. GIMPSL-L / Prime95 on 100 MHz Pentium PC22,976,220 · (22,976,221-1)
3723,021,377-1909,526January 27 1998Clarkson, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 200 MHz Pentium PC23,021,376 · (23,021,377-1)
3826,972,593-12,098,960June 1 1999Hajratwala, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 350 MHz Pentium II IBM Aptiva26,972,592 · (26,972,593-1)
39213,466,917-14,053,946November 14 2001Cameron, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 800 MHz Athlon Thunderbird213,466,916 · (213,466,917-1)
40220,996,011-16,320,430November 17 2003Shafer, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 2 GHz Dell Dimension220,996,010 · (220,996,011-1)
41224,036,583-17,235,733May 15 2004Findley, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 2.4 GHz Pentium 4 PC224,036,582 · (224,036,583-1)
42225,964,951-17,816,230February 18 2005Nowak, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 2.4 GHz Pentium 4 PC225,964,950 · (225,964,951-1)
43230,402,457-19,152,052December 15 2005Cooper, Boone, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 2 GHz Pentium 4 PC230,402,456 · (230,402,457-1)
44232,582,657-19,808,358September 4 2006Cooper, Boone, Woltman, Kurowski et. al. GIMPS & PrimeNetL-L / Prime95 on 3 GHz Pentium 4 PC232,582,656 · (232,582,657-1)
45*237,156,667-111,185,272September 6 2008Elvenich, Woltman, Kurowski, et al. GIMPS & PrimeNetL-L / Prime95 on 2.83 GHz Core 2 Duo PC237,156,666 · (237,156,667-1)
46*242,643,801-112,837,064April 12 2009Strindmo, Woltman, Kurowski, et al. GIMPS & PrimeNetL-L / Prime95 on 3 GHz Core 2 PC242,643,800 · (242,643,801-1)
47*243,112,609-112,978,189August 23 2008Smith, Woltman, Kurowski, et al. GIMPS & PrimeNetL-L / Prime95 on Dell Optiplex 745243,112,608 · (243,112,609-1)
48*257,885,161-117,425,170January 25, 2013Cooper, Woltman, Kurowski, et al. GIMPS & PrimeNetL-L / Prime95 v27.7 on Intel Core2 Duo E8400 @ 3.00GHz257,885,160 · (257,885,161-1)
49*274,207,281-122,338,618January 7 2016C. Cooper, G. Woltman, S. Kurowski, A. Blosser, et al.L-L / Prime95 on Intel i7-4790 @ 3.60GHz274,207,280 · (274,207,281-1)
* Provisional ranking, not all candidates between M32,582,657 and M74,207,281 have been eliminated

Distribution graph of Mersenne Primes found by GIMPS

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