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

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MnStatusDetails
253907Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
993422549869491924792066.4old
1511886735517144238533408572787.02021-08-29 07:50:34
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000202 / 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
Verified (Factored)2017-09-22Oliver Kruse3D205A52BD14AFED1013
Verified (Factored)2017-10-12Oliver Kruse3D205A52BD14AFED110061213
Verified (Factored)2017-11-06kkmrkkblmbrbk3D205A52BD14AFED15492713
Verified (Factored)2020-04-17Oliver Kruse123DD0C79457090F122749753
Verified2021-08-29H Michaelson123DD0C79457090F211407653
Verified2021-08-29JackBlock123DD0C79457090F224174353
Verified2021-08-29Oliver Kruse123DD0C79457090F224345653
P-1 factors
DateFactorB1B2
2021-08-29151188673551714423853340857300000003000000000
History
DateUserTypeResult
2022-04-24Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-08-29paulrectorCERT
PRP Certification
Proof certified good
2021-08-29Oliver KruseC-PRP
M253907/99342254986949192479/151188673551714423853340857 : 123DD0C79457090F
PRP proof power = 5
PRP: Verified
Proof certified good
2021-08-29curtiscCERT
PRP Certification
Proof certified good
2021-08-29Kimon BerlinCERT
PRP Certification
Proof certified good
2021-08-29JackBlockC-PRP
M253907/99342254986949192479/151188673551714423853340857 : 123DD0C79457090F
PRP proof power = 5
PRP: Verified
Proof certified good
2021-08-29H MichaelsonC-PRP
M253907/99342254986949192479/151188673551714423853340857 : 123DD0C79457090F
PRP proof power = 5
PRP: Verified
Proof certified good
2021-08-29Oliver KruseF-PM1
Factor: 151188673551714423853340857 / (P-1, B1=30000000, B2=3000000000, E=24)
2020-04-17Oliver KruseC-PRP
M253907/99342254986949192479 : 123DD0C79457090F
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M253907/99342254986949192479 : 3D205A52BD14AFED
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M253907/99342254986949192479 : 3D205A52BD14AFED
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M253907/99342254986949192479 : 3D205A52BD14AFED
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M253907/99342254986949192479 : 3D205A52BD14AFED
PRP without proof (not generated)