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
15157393Factored
FactorDigitsBitsDate
2855185551885558548767003212787.92022-11-29 17:26:37
ECM
DigitsB1Curves
255000014 / 280
Estimated T-Level: 20.3
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-04-20ilia3E43007A06926A6F839827
Verified (Factored)2006-10-01gabumb3E43007A06926A6F6151359
Verified (Factored)2006-11-28S5403843E43007A06926A6F6151359
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2023-05-27Dobri4B01C3B21AE0525B11509475753
History
DateUserTypeResult
2023-11-04nordiNF-PM1
B1=480000, B2=454342350
2023-10-22nordiNF-PM1
B1=480000
2023-05-27krackerCERT
PRP Certification
Proof certified good
2023-05-27DobriC-PRP
M15157393/285518555188555854876700321 : 4B01C3B21AE0525B
PRP proof power = 8
PRP: Verified
Proof certified good
2022-11-29ATHF-PP1
Start=2/7, B1=1000000, B2=29000000, Factor: 285518555188555854876700321
2021-10-15-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-02SRBaseNF
no factor from 2^70 to 2^71
2021-07-01lycornNF
no factor from 2^69 to 2^70
2017-12-24ramgeisNF
no factor from 2^68 to 2^69
2017-12-24ramgeisNF
no factor from 2^67 to 2^68
2014-05-14NesowaNF
no factor from 2^66 to 2^67
2014-05-14NesowaNF
no factor from 2^65 to 2^66