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

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MnStatusDetails
258023Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
18273188871030.8old
3490370009291238.32008-07-21 09:15:08
107398458941662508831884535772993.12015-09-18 09:51:27
ECM
DigitsB1Curves
2550000280 / 280
30250000589 / 640
Estimated T-Level: 29.6
TF below 2^93 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseA4262AD3C36D70AA3013
Verified2017-10-12Oliver KruseA4262AD3C36D70AA324228913
Verified2017-11-06kkmrkkblmbrbkA4262AD3C36D70AA38437813
Verified2020-04-17Oliver Kruse0127CEB6030656F0321078953
Verified2024-07-26kkmrkkblmbrbk0127CEB6030656F0315018853
History
DateUserTypeResult
2024-07-26Luke DurantCERT
PRP Certification
Proof certified good
2024-07-26kkmrkkblmbrbkC-PRP
M258023/1827318887/349037000929/10739845894166250883188453577 : 0127CEB6030656F0
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-29Oliver KruseNF-PM1
B1=30000000, B2=10035812696910
2021-08-20Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M258023/1827318887/349037000929/10739845894166250883188453577 : 0127CEB6030656F0
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M258023/1827318887/349037000929/10739845894166250883188453577 : A4262AD3C36D70AA
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M258023/1827318887/349037000929/10739845894166250883188453577 : A4262AD3C36D70AA
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M258023/known_factors : A4262AD3C36D70AA
PRP without proof (not generated)
2015-09-18TJAOIF-ECM
Factor: 10739845894166250883188453577 / (ECM curve 9, B1=50000, B2=5000000)
2008-07-21J FeitsmaF
Factor: 349037000929