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
1965109Factored
FactorDigitsBitsDate
298284198148245238681612374.72009-08-20 20:01:00
ECM
DigitsB1Curves
2550000280 / 280
3025000058 / 640
Estimated T-Level: 25.5
TF below 2^80 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Homme A. Piest2CDFFA8F88E62DC40
Verified (Factored)1998-12-27Kent Lee2CDFFA8F88E62DC4416887
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-05Oliver Kruse2383BEFF552E861B1013
Verified2017-11-12kkmrkkblmbrbk2383BEFF552E861B1108285513
History
DateUserTypeResult
2023-10-15USAFSSNF-PM1
B1=672000, B2=647447724
2022-08-12USAFSSNF-PM1
B1=132000, B2=134381520
2017-11-12kkmrkkblmbrbkC-PRP
M1965109/29828419814824523868161 : 2383BEFF552E861B
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1965109/29828419814824523868161 : 2383BEFF552E861B
PRP: Verified
PRP without proof (not generated)
2009-08-20SubPrimeF-ECM
Factor: 29828419814824523868161