Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnStatusDetails
101273Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
95763748811033.2old
773627501393691446.12008-07-26 09:16:55
32713871273839371651.52010-01-15 21:45:53
136233436414460903285543772683.52017-02-24 21:51:31
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000780 / 1566
Estimated T-Level: 32.5 ⓘ
TF below 2^103 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver Kruse5EBA2B606A5BC3934013
Verified2017-10-09Chang Chia-Tche5EBA2B606A5BC3934013
Verified2017-10-13kkmrkkblmbrbk5EBA2B606A5BC3934485013
Verified2020-04-17Oliver Kruse46A0009C38FADA4E4321553
Verified2022-04-15LordJulius46A0009C38FADA4E45895853
History
DateUserTypeResult
2022-12-08LordJuliusNF
no factor from 2^64 to 2^65
2022-12-08LordJuliusNF
no factor from 2^63 to 2^64
2022-12-08LordJuliusNF
no factor from 2^62 to 2^63
2022-04-15LordJuliusC-PRP
M101273/9576374881/77362750139369/3271387127383937/13623343641446090328554377 : 46A0009C38FADA4E
PRP: Verified
PRP without proof (small exponent)
2022-04-13LordJuliusNF
no factor from 2^61 to 2^62
2022-04-13LordJuliusNF
no factor from 2^60 to 2^61
2022-04-13LordJuliusNF
no factor from 2^59 to 2^60
2022-04-13LordJuliusNF
no factor from 2^58 to 2^59
2022-04-13LordJuliusNF
no factor from 2^57 to 2^58
2021-12-19Seth_TrNF-PM1
B1=1000000000, B2=6737693622660
2020-04-17Oliver KruseC-PRP
M101273/9576374881/77362750139369/3271387127383937/13623343641446090328554377 : 46A0009C38FADA4E
PRP: Verified
PRP without proof (small exponent)
2018-11-02J.R. AllenNF
no factor from 2^59 to 2^60
2018-11-02J.R. AllenNF
no factor from 2^58 to 2^59
2018-11-02J.R. AllenNF
no factor from 2^57 to 2^58
2018-10-25J.R. AllenNF
no factor from 2^52 to 2^57
2017-10-13kkmrkkblmbrbkC-PRP
M101273/9576374881/77362750139369/3271387127383937/13623343641446090328554377 : 5EBA2B606A5BC393
PRP: Verified
PRP without proof (not generated)
2017-10-09Chang Chia-TcheC-PRP
M101273/known_factors : 5EBA2B606A5BC393
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M101273/known_factors : 5EBA2B606A5BC393
PRP without proof (not generated)
2017-02-24kkmrkkblmbrbkF-ECM
Factor: 13623343641446090328554377 / (ECM curve 87, B1=250000, B2=25000000)
2016-11-02kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2010-01-15Rob_DeeF-ECM
Factor: 3271387127383937
2008-07-26J FeitsmaF
Factor: 77362750139369