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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Exponent Range:










MnStatusDetails
1845499Factored
FactorDigitsBitsDate
29707599651826023896565613372891.32020-07-08 19:20:53
ECM
DigitsB1Curves
2550000280 / 280
30250000108 / 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)Jim BorgardtBF89012F2A1905050
Verified (Factored)David BykowskiBF89012F2A1905050
Verified (Factored)1998-12-27Daniel R. BrownBF89012F2A1905051156580
Verified (Factored)2016-06-02MadPooBF89012F2A19050543882
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-07-10mnd9CCA7CCAE4C8E64DB1169250853
Verified2020-07-19ViliamFCCA7CCAE4C8E64DB195391453
History
DateUserTypeResult
2020-07-22ViliamFNF-PM1
B1=15000000, B2=150000000
2020-07-21ViliamFNF-PM1
B1=3000000, B2=300000000
2020-07-19ViliamFC-PRP
M1845499/2970759965182602389656561337 : CCA7CCAE4C8E64DB
PRP: Verified
PRP without proof (not generated)
2020-07-10mnd9C-PRP
M1845499/2970759965182602389656561337 : CCA7CCAE4C8E64DB
PRP: Verified
PRP without proof (not generated)
2020-07-08mnd9F-ECM
Factor: 2970759965182602389656561337 / (ECM curve 2, B1=50000, B2=5000000, Sigma=5359269015866602)
2019-06-24TJAOINF
no factor from 2^67 to 2^68
2018-08-06JossNF-PM1
B1=1845499, B2=184549900, E=12
2017-11-03TJAOINF
no factor from 2^66 to 2^67
2016-06-02MadPooC-LL
BF89012F2A190505
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
2015-09-07ramgeisNF
no factor from 2^65 to 2^66
2015-07-15mikrNF-PM1
B1=2780000, B2=91760000, E=12
2015-04-27snme2pm1NF
no factor from 2^64 to 2^65
2015-04-27snme2pm1NF
no factor from 2^63 to 2^64
2014-09-25JossNF-PM1
B1=169558
2014-05-19JossNF-PM1
B1=134779
2011-02-07Carsten KossendeyNF-PM1
B1=100000, B2=1700000, E=6
2011-01-21GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-08Architects CubedNF
no factor from 2^60 to 2^61