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

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MnStatusDetails
219983Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
3335382246011238.3old
504787163104871445.52008-07-21 09:14:13
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000176 / 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 KruseCBAFA2D01BC44F0D2013
Verified2017-10-12kkmrkkblmbrbkCBAFA2D01BC44F0D210793613
Verified2020-04-17Oliver Kruse07B1B140E0EE746526220953
Verified2023-08-03USAFSS07B1B140E0EE746522323253
History
DateUserTypeResult
2023-08-03curtiscCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M219983/333538224601/50478716310487 : 07B1B140E0EE7465
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-06Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2021-06-05Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M219983/333538224601/50478716310487 : 07B1B140E0EE7465
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M219983/333538224601/50478716310487 : CBAFA2D01BC44F0D
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M219983/333538224601/50478716310487 : CBAFA2D01BC44F0D
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M219983/333538224601/50478716310487 : CBAFA2D01BC44F0D
PRP without proof (not generated)
2008-07-21J FeitsmaF
Factor: 50478716310487