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
1812137Factored
FactorDigitsBitsDate
25369919824.6old
217710139191134.32008-07-15 07:46:55
40792472365911341.92008-07-15 07:46:55
211486033506580871754.22014-11-11 12:37:30
205744816112386333272064.22015-07-16 10:53:49
3014543587575910431532168.02021-02-17 20:15:23
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)2017-10-05Oliver Kruse53F71045A098B78B5013
Verified (Factored)2017-11-11kkmrkkblmbrbk53F71045A098B78B5145204913
Verified2021-02-19LaurV01B347225EF246C96132889053
P-1 factors
DateFactorB1B2
2015-07-162057448161123863332750000015000000
History
DateUserTypeResult
2021-02-19ChuckCERT
PRP Certification
Proof certified good
2021-02-19LaurVC-PRP
M1812137/25369919/21771013919/4079247236591/21148603350658087/20574481611238633327/301454358757591043153 : 01B347225EF246C9
PRP proof power = 7
PRP: Verified
Proof certified good
2021-02-17Chang Chia-TcheF-ECM
Factor: 301454358757591043153 / (ECM curve 7, B1=50000, B2=5000000, Sigma=8496021869251079)
2017-11-11kkmrkkblmbrbkC-PRP
M1812137/25369919/21771013919/4079247236591/21148603350658087/20574481611238633327 : 53F71045A098B78B
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1812137/25369919/21771013919/4079247236591/21148603350658087/20574481611238633327 : 53F71045A098B78B
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1812137/25369919/21771013919/4079247236591/21148603350658087/20574481611238633327 : 53F71045A098B78B
PRP without proof (not generated)
2015-07-16alpertronF-PM1
Factor: 20574481611238633327 / (P-1, B1=500000, B2=15000000, E=12)
2014-11-11TJAOIF
Factor: 21148603350658087 / TF: 54-55
2008-07-15J FeitsmaF
Factor: 4079247236591
2008-07-15J FeitsmaF
Factor: 21771013919