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
1756021Factored
FactorDigitsBitsDate
4767909452067641917314472478.72016-10-06 11:13:29
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)Philip Sharman9A10D33AFB8693AD0
Verified (Factored)1998-12-21David Shorr9A10D33AFB8693AD930814
Verified (Factored)2015-07-18MadPoo9A10D33AFB8693AD1604623
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-03Oliver Kruse5A91EFDB339470CF1013
Verified2017-11-04kkmrkkblmbrbk5A91EFDB339470CF131454213
History
DateUserTypeResult
2017-11-04kkmrkkblmbrbkC-PRP
M1756021/476790945206764191731447 : 5A91EFDB339470CF
PRP: Verified
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1756021/476790945206764191731447 : 5A91EFDB339470CF
PRP: Verified
PRP without proof (not generated)
2016-10-06bamF-ECM
Factor: 476790945206764191731447 / (ECM curve 2, B1=50000, B2=5000000)
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-09-06ramgeisNF
no factor from 2^65 to 2^66
2015-07-18MadPooC-LL
9A10D33AFB8693AD
2015-07-06mikrNF-PM1
B1=3642200, B2=123456789, E=12
2015-05-14snme2pm1NF
no factor from 2^64 to 2^65
2015-05-14snme2pm1NF
no factor from 2^63 to 2^64
2015-04-26Squeeky_SquirrelNF-PM1
B1=130000, B2=3640000, E=6
2014-09-17-Anonymous-NF-PM1
B1=173102
2014-05-06JossNF-PM1
B1=136551
2014-04-08JossNF-PM1
B1=100000
2011-02-07Carsten KossendeyNF-PM1
B1=95000, B2=1567500, E=6
2010-12-13GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-22Architects CubedNF
no factor from 2^60 to 2^61