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
61475497Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 274
P-1
B1 = 580000
B2 = 10730000
LL
StatusDateUserResidueShift
Verified2014-08-28Amazon EC2488CB36CA86469FF21407422
Verified2022-05-11Andrew_and488CB36CA86469FF5467265
History
DateUserTypeResult
2022-05-11Andrew_andC-LL
488CB36CA86469FF
2014-08-28Amazon EC2C-LL
488CB36CA86469FF
2014-07-21Craig MeyersNF
no factor from 2^73 to 2^74
2013-03-12krackerNF-PM1
B1=580000, B2=10730000
2013-03-05delta_tNF
no factor from 2^72 to 2^73
2013-03-05delta_tNF
no factor from 2^71 to 2^72
2009-02-26ahmeraliNF
no factor to 2^71
2009-02-15MarvNF
no factor from 2^64 to 2^65
2009-02-01Sturle SundeNF
no factor from 2^63 to 2^64