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
1964119Factored
FactorDigitsBitsDate
529061064761771445.6old
73961133068086142304072272.62016-05-14 01:48:23
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 Kruse05FF0E04A04BFA342013
Verified2017-11-11ATH05FF0E04A04BFA342139161613
History
DateUserTypeResult
2023-10-14USAFSSNF-PM1
B1=576000, B2=490908600
2022-08-12USAFSSNF-PM1
B1=132000, B2=134381520
2017-11-11ATHC-PRP
M1964119/52906106476177/7396113306808614230407 : 05FF0E04A04BFA34
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1964119/52906106476177/7396113306808614230407 : 05FF0E04A04BFA34
PRP: Verified
PRP without proof (not generated)
2016-05-14Richard B. WoodsF-ECM
Factor: 7396113306808614230407