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:










MnStatusDetails
918737Factored
FactorDigitsBitsDate
4050526964483328711858.5old
516684367731313883032065.52016-03-11 13:51:55
207550463405356397227432374.12016-03-11 13:51:55
926806984393847319065122072686.32016-03-11 13:51:56
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 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
Verified2017-10-05Oliver Kruse392BCF9970D3A6FA4013
Verified2017-10-14Oliver Kruse392BCF9970D3A6FA45265813
Verified2017-12-22ATH392BCF9970D3A6FA478908913
Unverified (Reliable)2020-04-23Oliver Kruse61EE53F0545310__453406353
P-1 factors
DateFactorB1B2
2021-03-1640505269644833287116722871
History
DateUserTypeResult
2021-03-16manrusF-PM1
Factor: 405052696448332871 / (P-1, B1=167, B2=22871)
2020-04-23Oliver KruseC-PRP
M918737/405052696448332871/51668436773131388303/20755046340535639722743/92680698439384731906512207 : 61EE53F0545310__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-12-22ATHC-PRP
M918737/405052696448332871/51668436773131388303/20755046340535639722743/92680698439384731906512207 : 392BCF9970D3A6FA
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-10-14Oliver KruseC-PRP
M918737/405052696448332871/20755046340535639722743/51668436773131388303/92680698439384731906512207 : 392BCF9970D3A6FA
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-10-05Oliver KruseC-PRP
M918737/405052696448332871/20755046340535639722743/51668436773131388303/92680698439384731906512207 : 392BCF9970D3A6FA
PRP: Unverified (Reliable)
PRP without proof (not generated)
2017-09-28Oliver KruseC-PRP
M918737/405052696448332871/20755046340535639722743/51668436773131388303/92680698439384731906512207 : 392BCF9970D3A6FA
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=200000, B2=5000000, E=6
2016-03-11TJAOIF-ECM
Factor: 92680698439384731906512207 / (ECM curve 88, B1=50000, B2=5000000)
2016-03-11TJAOIF-ECM
Factor: 51668436773131388303 / (ECM curve 7, B1=50000, B2=5000000)
2016-03-11TJAOIF-ECM
Factor: 20755046340535639722743 / (ECM curve 5, B1=50000, B2=5000000)