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
56628409Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 273
P-1
B1 = 1500000
B2 = 30000000
LL
StatusDateUserResidueShift
Verified2012-12-30Nicholas587E46FE9C99E0EC52012676
Verified2020-11-23kdelisle2005587E46FE9C99E0EC10784311
History
DateUserTypeResult
2020-11-23kdelisle2005C-LL
587E46FE9C99E0EC
2020-04-27Sid & AndyNF-PM1
B1=1500000, B2=30000000, E=12
2020-03-13Sid & AndyNF
no factor from 2^74 to 2^75
2018-11-13Sid & AndyNF
no factor from 2^73 to 2^74
2016-02-23Mark RoseNF
no factor from 2^61 to 2^63
2016-01-22-Anonymous-NF
no factor from 2^72 to 2^73
2012-12-30NicholasC-LL
587E46FE9C99E0EC
2012-06-17GrunwalderGIMPNF-PM1
B1=545000, B2=9673750
2012-06-13manrusNF
no factor from 2^71 to 2^72
2011-08-30Gymnasium_RaublingNF
no factor from 2^70 to 2^71
2011-06-26megavinkNF
no factor from 2^69 to 2^70
2011-04-26Ake TilanderNF
no factor from 2^68 to 2^69
2009-05-29nepdaNF
no factor from 2^67 to 2^68
2008-08-03Sturle SundeNF
no factor from 2^66 to 2^67
2008-08-01Sturle SundeNF
no factor from 2^65 to 2^66
2008-07-31Sturle SundeNF
no factor from 2^64 to 2^65
2008-07-30Sturle SundeNF
no factor from 2^63 to 2^64