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
1828829Factored
FactorDigitsBitsDate
612441203043024447322061692685.72019-12-12 20:17:17
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 Linton5AFC2BE13228B01F0
Verified (Factored)1999-03-26Roy Miller5AFC2BE13228B01F466341
Verified (Factored)2015-07-18MadPoo5AFC2BE13228B01F1240158
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-12-13Niels_Mache_NextcloudB2DB767DF0C32C66161949153
Verified2019-12-14marssystemsB2DB767DF0C32C661139920153
History
DateUserTypeResult
2019-12-14marssystemsC-PRP
M1828829/61244120304302444732206169 : B2DB767DF0C32C66
PRP: Verified
PRP without proof (not generated)
2019-12-13Niels_Mache_NextcloudC-PRP
M1828829/61244120304302444732206169 : B2DB767DF0C32C66
PRP: Verified
PRP without proof (not generated)
2019-12-12mnd9F-ECM
Factor: 61244120304302444732206169 / (ECM curve 1, B1=50000, B2=5000000, Sigma=1772410367060542)
2019-06-17TJAOINF
no factor from 2^67 to 2^68
2018-08-20JossNF-PM1
B1=1828829, B2=182882900, E=12
2018-04-09TJAOINF
no factor from 2^66 to 2^67
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
2015-09-04ramgeisNF
no factor from 2^65 to 2^66
2015-07-18MadPooC-LL
5AFC2BE13228B01F
2015-06-16mikrNF-PM1
B1=2780000, B2=91760000, E=12
2015-04-25snme2pm1NF
no factor from 2^64 to 2^65
2015-04-25snme2pm1NF
no factor from 2^63 to 2^64
2014-10-18JossNF-PM1
B1=185192
2014-08-21JossNF-PM1
B1=150096
2011-04-05GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-02-04kurlyNF-PM1
B1=115000, B2=2328750, E=6
2010-04-10Architects CubedNF
no factor from 2^60 to 2^61