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
1800167Factored
FactorDigitsBitsDate
248423047927.9old
401620951597040488381271992685.12020-10-06 00:07:17
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-03Oliver KruseC987D773876525011013
Verified (Factored)2017-11-05ATHC987D773876525011157316513
Verified2020-10-12roemer22016A185C39852021BC2157546153
Verified2020-10-19Nesowa6A185C39852021BC285011153
History
DateUserTypeResult
2020-10-19NesowaC-PRP
M1800167/248423047/40162095159704048838127199 : 6A185C39852021BC
PRP: Verified
PRP without proof (not generated)
2020-10-12roemer2201C-PRP
M1800167/248423047/40162095159704048838127199 : 6A185C39852021BC
PRP: Verified
PRP without proof (not generated)
2020-10-06nordiF-ECM
Factor: 40162095159704048838127199 / (ECM curve 6, B1=50000, B2=5000000, Sigma=3264435939021791)
2017-11-05ATHC-PRP
M1800167/248423047 : C987D77387652501
PRP: Verified
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1800167/248423047 : C987D77387652501
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12