Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
13048283Factored
FactorDigitsBitsDate
19031929308667030793272270.72021-07-02 04:32:44
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2003-06-01Thomas A. MullenE7CA0559849F0C092148571
Verified (Factored)2005-02-18Rick DeHavenE7CA0559849F0C091618366
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-06-03XZTBCADD2A800F3620D11017173553
History
DateUserTypeResult
2023-10-28nordiNF-PM1
B1=500000, B2=338934750
2023-10-16nordiNF-PM1
B1=500000
2022-06-03iwesCERT
PRP Certification
Proof certified good
2022-06-03XZTC-PRP
M13048283/1903192930866703079327 : BCADD2A800F3620D
PRP proof power = 8
PRP: Verified
Proof certified good
2021-07-02Smok_bmv F
Factor: 1903192930866703079327 / TF: 70-71*
2021-07-02Smok_bmv NF
no factor from 2^69 to 2^70
2018-01-26ramgeisNF
no factor from 2^68 to 2^69
2017-12-22-Anonymous-NF
no factor from 2^67 to 2^68
2015-07-05NesowaNF
no factor from 2^66 to 2^67
2014-05-19NesowaNF
no factor from 2^65 to 2^66
2013-05-27lycornNF
no factor from 2^64 to 2^65