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
5078081Factored
FactorDigitsBitsDate
783202528771089843488239451088131102.62021-11-06 04:31:43
ECM
DigitsB1Curves
255000045 / 280
Estimated T-Level: 20.8 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Burt Stewart8676EC08FC3E5AA70
Verified (Factored)2000-08-01Nathan Erickson8676EC08FC3E5AA71582018
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-11-06ATH0613FADB994331C81507774253
History
DateUserTypeResult
2021-11-06irowikiCERT
PRP Certification
Proof certified good
2021-11-06ATHC-PRP
M5078081/7832025287710898434882394510881 : 0613FADB994331C8
PRP proof power = 7
PRP: Verified
Proof certified good
2021-11-06ATHF-PP1
Start=2/7, B1=2500000, B2=92500000, Factor: 7832025287710898434882394510881
2021-04-02-Anonymous-NF
no factor from 2^71 to 2^72
2021-03-31-Anonymous-NF
no factor from 2^70 to 2^71
2021-03-31-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-11TJAOINF
no factor from 2^68 to 2^69
2018-06-11ramgeisNF
no factor from 2^67 to 2^68
2017-03-09Squeeky_SquirrelNF-PM1
B1=305000, B2=9531250, E=12
2016-05-23Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^61
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-08-02snme2pm1NF
no factor from 2^65 to 2^66
2014-09-15monstNF
no factor from 2^64 to 2^65
2014-09-01krackerNF
no factor from 2^63 to 2^64
2009-08-17USAFSSNF-PM1
B1=55000, B2=907500, E=6
2009-08-08GrunwalderGIMPNF
no factor from 2^1 to 2^63
2008-12-29Sturle SundeNF
no factor from 2^61 to 2^62