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
1903073Factored
FactorDigitsBitsDate
8882794243050135407616232479.62022-08-08 13:33:08
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 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)Thomas HonoldFABBE195716AFA340
Bad1999-01-10Scott Morgan18DC6A61809E8828505855
Verified (Factored)1999-03-15SmegheadsFABBE195716AFA341368170
Verified (Factored)2015-07-14MadPooFABBE195716AFA341868270
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-08-10LordJulius1ABDD1C059CF1111188976453
History
DateUserTypeResult
2022-08-10Jim DonovanCERT
PRP Certification
Proof certified good
2022-08-10LordJuliusC-PRP
M1903073/888279424305013540761623 : 1ABDD1C059CF1111
PRP proof power = 7
PRP: Verified
Proof certified good
2022-08-08masserF-PP1
Start=2/7, B1=1500000, B2=54000000, Factor: 888279424305013540761623
2019-04-25chuenkitNF
no factor from 2^67 to 2^68
2017-11-24mikrNF-PM1
B1=8000000, B2=320000000, E=12
2017-03-15Smok_bmv NF
no factor from 2^66 to 2^67
2015-08-31ramgeisNF
no factor from 2^65 to 2^66
2015-07-14MadPooC-LL
FABBE195716AFA34
2015-05-16monstNF
no factor from 2^64 to 2^65
2015-05-16omylistNF
no factor from 2^63 to 2^64
2011-06-27kurlyNF-PM1
B1=1000000, B2=30000000, E=12
2011-02-09Carsten KossendeyNF-PM1
B1=105000, B2=1785000, E=6
2011-01-22GrunwalderGIMPNF
no factor from 2^62 to 2^63
2011-01-22GrunwalderGIMPNF
no factor from 2^61 to 2^62
2009-05-24Architects CubedNF
no factor from 2^60 to 2^61