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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
61342277Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 274
P-1
B1 = 580000
B2 = 11310000
LL
StatusDateUserResidueShift
Verified2014-06-24Amazon EC2104D5ADF6D9B1B1651350128
Verified2022-04-06lajo321104D5ADF6D9B1B1616626110
History
DateUserTypeResult
2022-04-06lajo321C-LL
104D5ADF6D9B1B16
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2014-06-24Amazon EC2C-LL
104D5ADF6D9B1B16
2014-05-14ChuckNF
no factor from 2^73 to 2^74
2013-04-13Brian ChanNF-PM1
B1=580000, B2=11310000
2011-11-13PiepenNF
no factor from 2^72 to 2^73
2011-11-13PiepenNF
no factor from 2^71 to 2^72
2011-11-13PiepenNF
no factor from 2^70 to 2^71
2011-11-13PiepenNF
no factor from 2^69 to 2^70
2011-11-13PiepenNF
no factor from 2^70 to 2^73
2009-08-01Sturle SundeNF
no factor from 2^68 to 2^69
2009-07-30PrimeCruncherNF
no factor from 2^67 to 2^68
2009-07-26PrimeCruncherNF
no factor from 2^66 to 2^67
2009-07-23PrimeCruncherNF
no factor from 2^65 to 2^66
2009-04-04arnaudNF
no factor from 2^64 to 2^65
2009-01-31Sturle SundeNF
no factor from 2^63 to 2^64