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
8538269Factored
FactorDigitsBitsDate
112704386116280811381477331561046339063940129.72021-12-16 05:02:27
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2000-08-17Scott Johnson24CBBFF3D6A9DA2D7664390
Verified (Factored)2002-10-26Ars Technica Team Prime Rib24CBBFF3D6A9DA2D4116838
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-12-16firejuggler07D47D4B64B0D2811688537953
P-1 factors
DateFactorB1B2
2021-12-1611270438611628081138147733156104633906391000000330325710
History
DateUserTypeResult
2021-12-17onlinegameNF-PM1
B1=40000000
2021-12-16Ben DeloCERT
PRP Certification
Proof certified good
2021-12-16firejugglerC-PRP
M8538269/1127043861162808113814773315610463390639 : 07D47D4B64B0D281
PRP proof power = 8
PRP: Verified
Proof certified good
2021-12-16firejugglerF-PM1
Factor: 1127043861162808113814773315610463390639 / (P-1, B1=1000000, B2=330325710)
2021-11-14onlinegameNF-PM1
B1=244000
2021-10-24SRBaseNF
no factor from 2^71 to 2^72
2021-08-27SRBaseNF
no factor from 2^70 to 2^71
2021-08-20SRBaseNF
no factor from 2^69 to 2^70
2020-01-03TJAOINF
no factor from 2^68 to 2^69
2018-04-01monstNF
no factor from 2^67 to 2^68
2016-01-21snme2pm1NF
no factor from 2^66 to 2^67
2015-05-25VictordeHollanderNF
no factor from 2^65 to 2^66
2014-01-29lycornNF
no factor from 2^64 to 2^65