Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
4447Factored71153

155573849

78133185209

410532670497221973550121

598222550497242756375642930033091976261520001812697
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2020-09-30M Miller16CC04415815786C5226153
Verified (Factored)2020-04-17Oliver Kruse16CC04415815786C4106353
Verified (Factored)2017-12-07ATH3352014D5A7D50514153813
Verified (Factored)2017-10-02kkmrkkblmbrbk3352014D5A7D50514013
Verified (Factored)2017-09-21Oliver Kruse3352014D5A7D50514013
History
DateUserTypeResult
2020-09-30M MillerC-PRPM4447/71153/155573849/78133185209/410532670497221973550121/598222550497242756375642930033091976261520001812697 : 16CC04415815786C
2020-09-30Ryan PropperF-ECMFactor: 598222550497242756375642930033091976261520001812697 / (ECM curve 1, B1=110000000, B2=900514153782, Sigma=15305037124375852950)
2020-04-17Oliver KruseC-PRPM4447/71153/155573849/78133185209/410532670497221973550121 : 16CC04415815786C
2017-12-07ATHC-PRPM4447/71153/155573849/78133185209/410532670497221973550121 : 3352014D5A7D5051
2017-10-02kkmrkkblmbrbkC-PRPM4447/71153/155573849/78133185209/410532670497221973550121 : 3352014D5A7D5051
2017-09-21Oliver KruseC-PRPM4447/known_factors : 3352014D5A7D5051
2009-10-25Carsten KossendeyFFactor: 864898893883885842225473
2006-12-18HocaFFactor: 864898893883885842225473