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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
3455951Factored
FactorDigitsBitsDate
345940695111135.0old
5500548332326668491858.92015-10-13 11:35:04
4113680646851840592732168.52019-06-02 17:03:19
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-30alpertron43A55D733851C97C2013
Verified (Factored)2017-11-22Oliver Kruse43A55D733851C97C262532213
Verified2019-06-02ATH7F615CAEDA4F51133247478153
Verified2019-06-03marssystems7F615CAEDA4F51133106017253
P-1 factors
DateFactorB1B2
2019-06-0241136806468518405927320000200000
History
DateUserTypeResult
2022-05-12LordJuliusNF
no factor from 2^66 to 2^67
2022-05-12LordJuliusNF
no factor from 2^65 to 2^66
2022-05-12LordJuliusNF
no factor from 2^64 to 2^65
2022-05-12LordJuliusNF
no factor from 2^63 to 2^64
2022-05-12LordJuliusNF
no factor from 2^62 to 2^63
2022-01-07JossNF-PM1
B1=1050000, B2=111642300
2021-08-08JossNF
no factor from 2^67 to 2^68
2021-02-09JossNF
no factor from 2^65 to 2^66
2020-11-18JossNF-PM1
B1=345595, B2=3455951, E=6
2019-06-03marssystemsC-PRP
M3455951/34594069511/550054833232666849/411368064685184059273 : 7F615CAEDA4F5113
PRP: Verified
PRP without proof (not generated)
2019-06-02ATHC-PRP
M3455951/34594069511/550054833232666849/411368064685184059273 : 7F615CAEDA4F5113
PRP: Verified
PRP without proof (not generated)
2019-06-02JossF-PM1
Factor: 411368064685184059273 / (P-1, B1=20000, B2=200000)
2017-11-22Oliver KruseC-PRP
M3455951/34594069511/550054833232666849 : 43A55D733851C97C
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M3455951/34594069511/550054833232666849 : 43A55D733851C97C
PRP: Verified
PRP without proof (not generated)
2015-10-13TJAOIF
Factor: 550054833232666849 / TF: 58-59