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
1952479Factored
FactorDigitsBitsDate
605793046091651035132065.72009-08-14 07:31:24
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.
LL
StatusDateUserResidueShift
Verified (Factored)1998-02-01Don Kersey216AA732D5B1C40C0
Verified (Factored)1999-05-02Francesco Bosia216AA732D5B1C40C1078110
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-05Oliver KruseE1FEE0703E9DCE7D1013
Verified2017-11-11ATHE1FEE0703E9DCE7D171671813
History
DateUserTypeResult
2017-11-11ATHC-PRP
M1952479/60579304609165103513 : E1FEE0703E9DCE7D
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1952479/60579304609165103513 : E1FEE0703E9DCE7D
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2009-08-14SubPrimeF-ECM
Factor: 60579304609165103513