Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
15072823Factored
FactorDigitsBitsDate
46990608513677766830176392582.02022-07-05 08:44:27
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
Bad2002-03-24LSSU Mersenne Prime Search Group14FD4B2A13586D974240234
Verified (Factored)2006-03-28Doug Femec55A6BEC5F43292021879941
Verified (Factored)2006-10-01Ars Technica Team Prime Rib55A6BEC5F43292027104711
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-06-02DobriB3A6E5EC2AED428111408333853
History
DateUserTypeResult
2023-11-04nordiNF-PM1
B1=569000, B2=561249150
2023-10-21nordiNF-PM1
B1=569000
2023-06-02George WoltmanCERT
PRP Certification
Proof certified good
2023-06-02DobriC-PRP
M15072823/4699060851367776683017639 : B3A6E5EC2AED4281
PRP proof power = 8
PRP: Verified
Proof certified good
2022-07-05ATHF-PP1
Start=2/7, B1=1000000, Factor: 4699060851367776683017639
2022-03-05Yves de WandelaarNF
no factor from 2^73 to 2^74
2022-01-22-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-10-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-02SRBaseNF
no factor from 2^70 to 2^71
2021-07-06lycornNF
no factor from 2^69 to 2^70
2017-10-06ramgeisNF
no factor from 2^68 to 2^69
2016-04-08mikrNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-06-11NesowaNF
no factor from 2^66 to 2^67