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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MnDetails
7798783
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 267
Factored
FactorDigitsBitsDate
7693781568069235423672169.42012-09-29 07:10:31
P-1 factors
DateFactorsB1B2
2012-09-29769378156806923542367
950001876250
LL
StatusDateUserResidueShiftSoftware
FactoredPaul Victor NovareseB929CDE1D8D2420C0Mlucas,Ernst Mayer,v2.5 and later,(aka E2)
Factored1999-07-04Phil JorgensenB929CDE1D8D2420C6577755Windows,Prime95,v18,(aka WU1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2018-05-11storm55104DB7C4B5115B94931341327853
Verified
PRP without proof (not generated)
2019-10-05ATH4DB7C4B5115B94931357413953
History
DateUserTypeResult
2025-01-01Stef42NF-PM1B1=1125000, B2=1868603100
2019-10-05ATHC-PRPM7798783/769378156806923542367 : 4DB7C4B5115B9493
2018-05-11storm5510C-PRPM7798783/769378156806923542367 : 4DB7C4B5115B9493
2012-09-29NesowaF-PM1Factor: 769378156806923542367
2009-06-30Carsten KossendeyNF-PM1B1=45000, B2=686250, E=6
1999-07-04-anonymous-C-LLB929CDE1D8D2420C
1998-11-07-anonymous-NFno factor TF: 1-63
1998-10-18-anonymous-NFno factor TF: 1-62
1998-08-09-anonymous-NFno factor TF: 1-61