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
1705051Factored
FactorDigitsBitsDate
8996253366835662141192169.62014-01-08 20:36:40
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 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)David Linton128F42021723F2C80
Verified (Factored)1999-01-29MIT dept. of Univ. of Jyvaskyla128F42021723F2C8935958
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30alpertron5D69A290994013BD1013
Verified2017-10-18Oliver Kruse5D69A290994013BD1146339013
History
DateUserTypeResult
2022-03-08LordJuliusNF
no factor from 2^58 to 2^60
2017-10-18Oliver KruseC-PRP
M1705051/899625336683566214119 : 5D69A290994013BD
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1705051/899625336683566214119 : 5D69A290994013BD
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-01-08Chang Chia-TcheF-ECM
Factor: 899625336683566214119
2011-02-01Carsten KossendeyNF-PM1
B1=90000, B2=1507500, E=6
2011-01-29JossNF-PM1
B1=50000
2010-10-16GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-20Architects CubedNF
no factor from 2^60 to 2^61