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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Exponent Range:





MnDetails
8442653
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
118197143926.8old
33095199771031.62008-09-08 04:33:19
1707056122829793574392167.22021-12-30 09:08:16
ECM
DigitsB1Curves
255000082 / 280
Estimated T-Level: 21.5
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Factored
PRP without proof (not generated)
2018-10-28rucioC60C7F2F857193472632368053
Factored
PRP without proof (not generated)
2020-06-01Luigi MorelliC60C7F2F857193472729479153
Verified
Certified Good
2022-01-05Joe S.C60C7F2F857193473836034053
History
DateUserTypeResult
2024-04-20Dylan DelgadoNF-PM1B1=3900000, B2=2116647390
2022-01-14riccardo ubertiNF-PP1Start=6/5, B1=3000000, B2=60000000
2022-01-10riccardo ubertiNF-PP1Start=2/7, B1=3000000, B2=60000000
2022-01-05riccardo ubertiNF-PM1B1=3000000, B2=60000000
2022-01-05riccardo ubertiCERT
Proof certified good
2022-01-05Joe S.C-PRPM8442653/118197143/3309519977/170705612282979357439 : C60C7F2F85719347
Proof Certified Good

Proof Power: 8

2021-12-30TJAOIFFactor: 170705612282979357439
2020-06-01Luigi MorelliC-PRPM8442653/118197143/3309519977 : C60C7F2F85719347
2018-10-28rucioC-PRPM8442653/118197143/3309519977 : C60C7F2F85719347
2008-09-08Will EdgingtonFFactor: 3309519977