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
238859Factored
FactorDigitsBitsDate
35000448770571341.7old
65953978973610558685293386974759333109.02022-04-04 14:45:35
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000245 / 1566
Estimated T-Level: 30.8 ⓘ
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse6D740DF2049C5A921013
Verified (Factored)2017-09-22Oliver Kruse6D740DF2049C5A921013
Verified (Factored)2017-11-06kkmrkkblmbrbk6D740DF2049C5A921446913
Verified (Factored)2020-04-17Oliver Kruse96771DF131E8141A14201153
Verified2022-04-05Oliver Kruse96771DF131E8141A214477353
P-1 factors
DateFactorB1B2
2022-04-046595397897361055868529338697475933000000010120247026890
History
DateUserTypeResult
2022-04-05ANONYMOUSCERT
PRP Certification
Proof certified good
2022-04-05Oliver KruseC-PRP
M238859/3500044877057/659539789736105586852933869747593 : 96771DF131E8141A
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-04Oliver KruseF-PM1
Factor: 659539789736105586852933869747593 / (P-1, B1=30000000, B2=10120247026890)
2021-07-16Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M238859/3500044877057 : 96771DF131E8141A
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M238859/3500044877057 : 6D740DF2049C5A92
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M238859/3500044877057 : 6D740DF2049C5A92
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M238859/3500044877057 : 6D740DF2049C5A92
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M238859/3500044877057 : 6D740DF2049C5A92
PRP without proof (not generated)