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:










MnStatusDetails
2129971Factored
FactorDigitsBitsDate
14824598171030.5old
379571084725207678703032375.02021-12-27 10:40:45
ECM
DigitsB1Curves
2550000136 / 280
Estimated T-Level: 22.4 ⓘ
TF below 2^70 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-08Oliver KruseFD9CE1519356B2D91013
Verified (Factored)2017-11-18kkmrkkblmbrbkFD9CE1519356B2D917305113
Verified2021-12-27MarkS566BB52ACD129BCF2154900353
History
DateUserTypeResult
2021-12-27Nerdy TromboneCERT
PRP Certification
Proof certified good
2021-12-27MarkSC-PRP
M2129971/1482459817/37957108472520767870303 : 566BB52ACD129BCF
PRP proof power = 7
PRP: Verified
Proof certified good
2021-12-27MarkSF-ECM
Factor: 37957108472520767870303 / (ECM curve 3, B1=50000, B2=5000000, Sigma=3495015255582715)
2017-11-18kkmrkkblmbrbkC-PRP
M2129971/1482459817 : FD9CE1519356B2D9
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-08Oliver KruseC-PRP
M2129971/1482459817 : FD9CE1519356B2D9
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-18alpertronNF-PM1
B1=500000, B2=15000000, E=12