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
2828867Factored
FactorDigitsBitsDate
278586822171134.7old
9322423243409558190308712479.62023-01-30 18:54:33
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-22Oliver Kruse570709EDB0DF684C1230002553
Verified (Factored)2017-12-07kkmrkkblmbrbk570709EDB0DF684C1160454053
Verified2023-01-31LordJulius570709EDB0DF684C294936153
P-1 factors
DateFactorB1B2
2023-01-30932242324340955819030871360000287380170
History
DateUserTypeResult
2023-01-31Jonathan WebbCERT
PRP Certification
Proof certified good
2023-01-31LordJuliusC-PRP
M2828867/27858682217/932242324340955819030871 : 570709EDB0DF684C
PRP proof power = 7
PRP: Verified
Proof certified good
2023-01-30USAFSSF-PM1
Factor: 932242324340955819030871 / (P-1, B1=360000, B2=287380170)
2023-01-28Lisander ViaeneNF-PM1
B1=72000, B2=281496600
2017-12-07kkmrkkblmbrbkC-PRP
M2828867/27858682217 : 570709EDB0DF684C
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-22Oliver KruseC-PRP
M2828867/27858682217 : 570709EDB0DF684C
PRP: Verified (Factored)
PRP without proof (not generated)