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
421699Factored
FactorDigitsBitsDate
111328537926.7old
374443410071135.12008-07-21 09:18:58
451082986331135.42008-07-21 09:18:58
2223712410442091547.72014-03-12 11:20:12
3275271334731671548.22014-03-28 11:48:35
20750968608787584491960.82014-11-21 11:34:34
1295783480299755158572166.82015-03-27 11:20:12
3558570232203147177885532478.22014-11-21 11:34:34
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000541 / 1566
Estimated T-Level: 31.7 ⓘ
TF below 2^100 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-23Oliver Kruse5E9DD433357138738013
Verified2017-10-13Oliver Kruse5E9DD43335713873827694813
Verified2017-12-16ATH5E9DD43335713873834465913
Unverified (Reliable)2020-04-18Oliver KruseACFD33FB0A056B__814019853
History
DateUserTypeResult
2022-11-17LordJuliusNF
no factor from 2^65 to 2^66
2022-11-17LordJuliusNF
no factor from 2^64 to 2^65
2022-04-25LordJuliusNF
no factor from 2^62 to 2^63
2022-04-25LordJuliusNF
no factor from 2^61 to 2^62
2022-04-25LordJuliusNF
no factor from 2^59 to 2^60
2021-05-20Seth_TrNF-PM1
B1=1000000000, B2=241000000000
2021-03-11Seth_TrNF-PM1
B1=50000000, B2=8550000000
2021-03-10Seth_TrNF-PM1
B1=20000000, B2=2860000000
2021-03-02Seth_TrNF-PM1
B1=10000000, B2=1310000000
2020-04-18Oliver KruseC-PRP
M421699/111328537/37444341007/45108298633/222371241044209/327527133473167/2075096860878758449/129578348029975515857/355857023220314717788553 : ACFD33FB0A056B__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-12-16ATHC-PRP
M421699/111328537/37444341007/45108298633/222371241044209/327527133473167/2075096860878758449/129578348029975515857/355857023220314717788553 : 5E9DD43335713873
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M421699/111328537/37444341007/45108298633/222371241044209/327527133473167/2075096860878758449/355857023220314717788553/129578348029975515857 : 5E9DD43335713873
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-23Oliver KruseC-PRP
M421699/known_factors : 5E9DD43335713873
PRP without proof (not generated)
2015-03-27TJAOIF-ECM
Factor: 129578348029975515857 / (ECM curve 26, B1=50000, B2=5000000)
2014-11-21TJAOIF-ECM
Factor: 355857023220314717788553 / (ECM curve 8, B1=50000, B2=5000000)
2014-11-21TJAOIF-ECM
Factor: 2075096860878758449 / (ECM curve 14, B1=50000, B2=5000000)
2014-03-28TJAOIF
Factor: 327527133473167
2014-03-12TJAOIF
Factor: 222371241044209
2008-07-21J FeitsmaF
Factor: 45108298633
2008-07-21J FeitsmaF
Factor: 37444341007