Marin Mersenne 2^P-1
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MnStatusDetails
298099Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
11233717541421452222546366409133199.82019-10-28 06:14:27
ECM
DigitsB1Curves
2550000280 / 280
30250000519 / 640
Estimated T-Level: 29.1 ⓘ
TF below 2^92 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski7BE40
Verified (Factored)Unknown7BE40
Verified (Factored)Guillermo Ballester Valor57EC862D9D5A7BE40
Verified (Factored)Eivind Triel57EC862D9D5A7BE4116841
Verified (Factored)2001-11-24Eugene Gogol'57EC862D9D5A7BE4195751
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-10-29mnd90B04F4BCC4B63F39122853153
Verified2019-10-29ATH0B04F4BCC4B63F3916456753
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-05-01nordiNF-PP1
Start=6/5, B1=10000000, B2=500000000
2021-04-22nordiNF-PP1
Start=2/7, B1=10000000, B2=500000000
2019-10-29ATHC-PRP
M298099/1123371754142145222254636640913 : 0B04F4BCC4B63F39
PRP: Verified
PRP without proof (small exponent)
2019-10-29mnd9C-PRP
M298099/1123371754142145222254636640913 : 0B04F4BCC4B63F39
PRP: Verified
PRP without proof (small exponent)
2019-10-28lycornF-ECM
Factor: 1123371754142145222254636640913 / (ECM curve 28, B1=250000, B2=25000000)
2019-05-28Gordon SpenceNF
no factor from 2^65 to 2^66
2018-03-05BloodERazorNF
no factor from 2^64 to 2^65
2016-01-03Gordon SpenceNF
no factor from 2^63 to 2^64
2016-01-03Gordon SpenceNF
no factor from 2^62 to 2^63
2015-08-13NRNF
no factor from 2^61 to 2^62
2013-06-12lycornNF
no factor from 2^60 to 2^61
2012-08-19markrNF-PM1
B1=12000000, B2=500000000, E=12
2011-08-01JossNF-PM1
B1=1595784
2009-01-25Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-02Sturle SundeNF
no factor from 2^58 to 2^59