Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
6988307Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
4046615088247991548.5old
45914145298203888411962.02016-06-18 10:41:12
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-01-29Oliver KruseA38F16A2E74CA5542450960053
Verified2019-02-20ANONYMOUSA38F16A2E74CA5542375510253
History
DateUserTypeResult
2024-01-01Stef42NF-PM1
B1=600000, B2=1280476890
2019-02-20ANONYMOUSC-PRP
M6988307/404661508824799/4591414529820388841 : A38F16A2E74CA554
PRP: Verified
PRP without proof (not generated)
2018-01-29Oliver KruseC-PRP
M6988307/404661508824799/4591414529820388841 : A38F16A2E74CA554
PRP: Verified
PRP without proof (not generated)
2016-06-18TJAOIF
Factor: 4591414529820388841 / TF: 61-62