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
2305837Factored
FactorDigitsBitsDate
43303618871032.0old
323877865031134.92008-07-14 20:22:54
1828252040571237.42008-07-14 20:22:54
578393570542571445.72014-01-28 11:38:00
ECM
DigitsB1Curves
255000082 / 280
Estimated T-Level: 21.5 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-11Oliver Kruse8197CCEE8B882B141013
Verified2017-10-18Oliver Kruse952FBE629CCB00114145959753
Verified2017-11-23kkmrkkblmbrbk952FBE629CCB00114211558053
History
DateUserTypeResult
2021-06-11ViliamFNF-PM1
B1=5000000, B2=505000000
2018-02-19alpertronNF-PM1
B1=500000, B2=15000000, E=12
2017-11-23kkmrkkblmbrbkC-PRP
M2305837/4330361887/182825204057/32387786503/57839357054257 : 952FBE629CCB0011
PRP: Verified
PRP without proof (not generated)
2017-10-18Oliver KruseC-PRP
M2305837/4330361887/182825204057/32387786503/57839357054257 : 952FBE629CCB0011
PRP: Verified
PRP without proof (not generated)
2017-10-11Oliver KruseC-PRP
M2305837/known_factors : 8197CCEE8B882B14
PRP: Verified
PRP without proof (not generated)
2014-01-28TJAOIF
Factor: 57839357054257
2008-07-14George WoltmanF-ECM
Factor: 32387786503
2008-07-14George WoltmanF-ECM
Factor: 182825204057