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

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Exponent Range:










MnStatusDetails
196043Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
392087618.6old
15683441823.92008-07-27 10:50:07
2186986030397949182646953112787.52014-07-06 10:38:49
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 Kruse862DC6241DB8029D3013
Verified2017-09-30alpertron862DC6241DB8029D3013
Verified2017-12-07ATH862DC6241DB8029D31504213
Verified2020-04-17Oliver KruseA17EE35A4E423878310307953
Verified (Factored)2022-05-12Jorge CoveiroA17EE35A4E42387813427153
Verified2023-08-24USAFSSA17EE35A4E42387838545553
History
DateUserTypeResult
2023-08-24curtiscCERT
PRP Certification
Proof certified good
2023-08-24USAFSSC-PRP
M196043/392087/15683441/218698603039794918264695311 : A17EE35A4E423878
PRP proof power = 5
PRP: Verified
Proof certified good
2022-05-12Jorge CoveiroC-PRP
M196043/392087 : A17EE35A4E423878
PRP proof power = 5
PRP: Verified (Factored)
PRP proof never uploaded
2020-04-17Oliver KruseC-PRP
M196043/392087/15683441/218698603039794918264695311 : A17EE35A4E423878
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M196043/392087/15683441/218698603039794918264695311 : 862DC6241DB8029D
PRP: Verified
PRP without proof (small exponent)
2017-09-30alpertronC-PRP
M196043/15683441/218698603039794918264695311/392087 : 862DC6241DB8029D
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M196043/392087/15683441/218698603039794918264695311 : 862DC6241DB8029D
PRP without proof (not generated)
2017-08-23kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2014-07-06TJAOIF-ECM
Factor: 218698603039794918264695311
2008-07-27J FeitsmaF
Factor: 15683441