Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
15004267Factored
FactorDigitsBitsDate
1300830309067004034389532476.82022-02-03 07:05:07
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)2002-03-31Steffen Zahn2559A85A4F9F5BFE10160816
Verified (Factored)2005-09-22Ars Technica Team Prime Rib2559A85A4F9F5BFE4840809
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-02-24Dobri6E2B3DDE3688515F127153453
History
DateUserTypeResult
2023-02-24Johannes NCERT
PRP Certification
Proof certified good
2023-02-24DobriC-PRP
M15004267/130083030906700403438953 : 6E2B3DDE3688515F
PRP proof power = 8
PRP: Verified
Proof certified good
2022-02-03ATHF-PP1
Start=2/7, B1=1000000, B2=29000000, Factor: 130083030906700403438953
2021-10-09-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-02SRBaseNF
no factor from 2^70 to 2^71
2020-06-12ThaNF-PM1
B1=500000, B2=20000000, E=12
2020-05-30YxinityNF
no factor from 2^69 to 2^70
2017-09-30ramgeisNF
no factor from 2^68 to 2^69
2015-10-07mikrNF
no factor from 2^67 to 2^68
2014-06-11NesowaNF
no factor from 2^66 to 2^67
2014-06-11NesowaNF
no factor from 2^65 to 2^66