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

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MnStatusDetails
297853Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
13701239823.7old
915004417929.82008-07-21 09:16:10
73729644018071342.72008-07-21 09:16:10
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000192 / 1566
Estimated T-Level: 30.6
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse6C7044D3CEB0F9C73013
Verified2017-10-12Oliver Kruse6C7044D3CEB0F9C736037713
Verified2017-11-06kkmrkkblmbrbk6C7044D3CEB0F9C737384313
Verified2020-04-17Oliver Kruse6C1591B634582167326736953
Verified2024-08-20kkmrkkblmbrbk6C1591B634582167324415253
History
DateUserTypeResult
2024-12-02yuriy_5-1NF-PM1
B1=27402476, B2=6679632809850
2024-08-20Luke DurantCERT
PRP Certification
Proof certified good
2024-08-20kkmrkkblmbrbkC-PRP
M297853/13701239/915004417/7372964401807 : 6C1591B634582167
PRP proof power = 5
PRP: Verified
Proof certified good
2024-03-14USAFSSNF-PM1
B1=3750000, B2=34831638660
2023-11-11Gabriel LignelliNF-PM1
B1=59000
2023-09-24NumberwangNF-PP1
Start=2/7, B1=90000, B2=27000000
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2021-04-29nordiNF-PP1
Start=6/5, B1=10000000, B2=500000000
2021-04-23nordiNF-PP1
Start=2/7, B1=10000000, B2=500000000
2020-04-17Oliver KruseC-PRP
M297853/13701239/915004417/7372964401807 : 6C1591B634582167
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M297853/13701239/915004417/7372964401807 : 6C7044D3CEB0F9C7
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M297853/13701239/7372964401807/915004417 : 6C7044D3CEB0F9C7
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M297853/13701239/7372964401807/915004417 : 6C7044D3CEB0F9C7
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M297853/13701239/7372964401807/915004417 : 6C7044D3CEB0F9C7
PRP without proof (not generated)
2008-07-21J FeitsmaF
Factor: 915004417
2008-07-21J FeitsmaF
Factor: 7372964401807