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
2774731Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
377363417928.5old
327344096824484137212064.82018-01-30 14:38:26
ECM
DigitsB1Curves
255000061 / 280
Estimated T-Level: 21.1
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-21Oliver Kruse07823C6800007B211266349253
Verified (Factored)2017-12-06kkmrkkblmbrbk07823C6800007B211223854253
Verified2018-01-30ATH07823C6800007B21221138253
History
DateUserTypeResult
2022-12-02USAFSSNF-PM1
B1=320000, B2=261254070
2018-01-30ATHC-PRP
M2774731/377363417/32734409682448413721 : 07823C6800007B21
PRP: Verified
PRP without proof (not generated)
2018-01-30TJAOIF
Factor: 32734409682448413721 / TF: 64-65
2017-12-06kkmrkkblmbrbkC-PRP
M2774731/377363417 : 07823C6800007B21
PRP: Verified
PRP without proof (not generated)
2017-10-21Oliver KruseC-PRP
M2774731/377363417 : 07823C6800007B21
PRP: Verified
PRP without proof (not generated)