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
15168107Factored
FactorDigitsBitsDate
146914450972500410413212373.62023-02-20 05:01:50
ECM
DigitsB1Curves
255000013 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2003-05-11C. Cooper / S. BooneB2EA959F7236425B5396936
Bad2006-03-01David A. EvansCE2819118757AF9E11882563
Verified (Factored)2007-02-20Daniel SwansonB2EA959F7236425B6628243
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-06-29LordJulius2E701647BE5A8CF311457574053
History
DateUserTypeResult
2023-11-04nordiNF-PM1
B1=480000, B2=454342350
2023-10-22nordiNF-PM1
B1=480000
2023-06-29InsolentJaguarCERT
PRP Certification
Proof certified good
2023-06-29LordJuliusC-PRP
M15168107/14691445097250041041321 : 2E701647BE5A8CF3
PRP proof power = 8
PRP: Verified
Proof certified good
2023-02-20ATHF-PP1
Start=2/7, B1=1000000, B2=28000000, Factor: 14691445097250041041321
2021-10-20Joe S.NF
no factor from 2^72 to 2^73
2021-09-06LaurVNF
no factor from 2^71 to 2^72
2021-08-23ChuckNF
no factor from 2^70 to 2^71
2021-07-02lycornNF
no factor from 2^69 to 2^70
2017-12-27ramgeisNF
no factor from 2^68 to 2^69
2017-12-27ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-05-14NesowaNF
no factor from 2^66 to 2^67