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
1878697Factored
FactorDigitsBitsDate
86420063826.4old
70789302971032.72008-07-15 07:47:46
15164353722791340.52008-07-15 07:47:45
238440465846011444.42014-01-10 14:40:33
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 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 KruseE2E7797B5E3F3E164013
Verified2017-11-11kkmrkkblmbrbkE2E7797B5E3F3E164163043013
History
DateUserTypeResult
2017-11-11kkmrkkblmbrbkC-PRP
M1878697/86420063/7078930297/1516435372279/23844046584601 : E2E7797B5E3F3E16
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1878697/86420063/1516435372279/7078930297/23844046584601 : E2E7797B5E3F3E16
PRP: Verified
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1878697/86420063/1516435372279/7078930297/23844046584601 : E2E7797B5E3F3E16
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-01-10TJAOIF
Factor: 23844046584601
2008-07-15J FeitsmaF
Factor: 7078930297
2008-07-15J FeitsmaF
Factor: 1516435372279