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:





MnDetails
8471839
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
63156525868200577691962.5old
2150754277516650034312167.52022-10-21 16:29:57
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Factored
PRP without proof (not generated)
2018-10-31rucioEF30834EFA8D26811117094153
Factored
PRP without proof (not generated)
2020-06-10marssystemsEF30834EFA8D26811196846553
Verified
Certified Good
2022-10-30g0bEF30834EFA8D26812459422253
History
DateUserTypeResult
2024-05-14Stef42NF-PM1B1=1055000, B2=2213224650
2022-10-30curtiscCERT
Proof certified good
2022-10-30g0bC-PRPM8471839/6315652586820057769/215075427751665003431 : EF30834EFA8D2681
Proof Certified Good

Proof Power: 8

2022-10-24aupFFactor: 6315652586820057769 / TF: 62-64
2022-10-24LordJuliusNFno factor TF: 66-67
2022-10-24LordJuliusNFno factor TF: 65-66
2022-10-24LordJuliusNFno factor TF: 64-65
2022-10-21TJAOIFFactor: 215075427751665003431
2020-06-10marssystemsC-PRPM8471839/6315652586820057769 : EF30834EFA8D2681
2018-10-31rucioC-PRPM8471839/6315652586820057769 : EF30834EFA8D2681
1998-10-25-anonymous-FFactor: 6315652586820057769
1998-10-04-anonymous-NFno factor TF: 1-62