Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
53774837Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 640000
B2 = 18560000
LL
StatusDateUserResidueShift
Verified2012-05-30curtiscA6FD67B1F819122F34548380
Verified2020-07-04Sergey NosovA6FD67B1F819122F37320128
History
DateUserTypeResult
2020-07-04Sergey NosovC-LL
A6FD67B1F819122F
2019-08-27ixfd64NF
no factor from 2^73 to 2^74
2016-02-01AirSquirrelsNF
no factor from 2^72 to 2^73
2012-05-30curtiscC-LL
A6FD67B1F819122F
2012-04-30BdotNF
no factor from 2^71 to 2^72
2011-09-08megavinkNF
no factor from 2^70 to 2^71
2011-07-14Gordon BowerNF
no factor from 2^69 to 2^70
2011-03-08ANONYMOUSNF
no factor from 2^68 to 2^69
2011-03-07Chun sung sooNF-PM1
B1=640000, B2=18560000, E=6
2009-05-19bamNF
no factor from 2^67 to 2^68
2009-03-04jfarekNF
no factor from 2^66 to 2^67
2009-03-03jfarekNF
no factor from 2^65 to 2^66
2009-02-25Johan FröjdmanNF
no factor from 2^64 to 2^65
2008-07-07-Anonymous-NF
no factor to 2^64