Marin Mersenne 2^P-1
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MnStatusDetails
2250263Factored
FactorDigitsBitsDate
6245868798863556257772169.12016-12-03 22:56:18
ECM
DigitsB1Curves
255000081 / 280
Estimated T-Level: 21.4
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Robert Moniot0C83B489E6DDFF010
Verified (Factored)1999-05-02George Barbanis0C83B489E6DDFF011488395
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-10Oliver KruseE133857DA7ECE37B1013
Verified2017-11-20ATHE133857DA7ECE37B1159887713
History
DateUserTypeResult
2023-05-13This -Anonymous-NF-PM1
B1=800000, B2=40000000, E=12
2017-11-20ATHC-PRP
M2250263/624586879886355625777 : E133857DA7ECE37B
PRP: Verified
PRP without proof (not generated)
2017-10-10Oliver KruseC-PRP
M2250263/624586879886355625777 : E133857DA7ECE37B
PRP: Verified
PRP without proof (not generated)
2017-01-05Gordon SpenceNF
no factor from 2^66 to 2^67
2016-12-03bamF-ECM
Factor: 624586879886355625777 / (ECM curve 2, B1=50000, B2=5000000)
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-01-17JossNF-PM1
B1=589050, B2=5890500, E=6
2015-10-27ramgeisNF
no factor from 2^65 to 2^66
2015-03-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-10VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-03JossNF-PM1
B1=142046
2014-06-01JossNF-PM1
B1=113523
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-04Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-14Oscar ÖstlinNF-PM1
B1=85000, B2=1636250, E=6
2010-10-20Oscar ÖstlinNF-PM1
B1=75011
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61