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

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MnStatusDetails
26893Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1842163092592091547.4old
101872006974689113321754667292993.02011-03-21 06:06:09
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000001133 / 4588
Estimated T-Level: 36.2
TF below 2^115 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseD58F070950DBBB462013
Verified2017-10-02kkmrkkblmbrbkD58F070950DBBB462013
Verified2017-12-07ATHD58F070950DBBB4621003313
Verified2020-04-17Oliver Kruse0EB907851FFBD34B2673153
Verified2024-07-01kkmrkkblmbrbk0EB907851FFBD34B2944653
History
DateUserTypeResult
2024-11-17masserNF-PP1
Start=6/5, B1=100000000, B2=99900000000
2024-11-16masserNF-PP1
Start=172/53, B1=100000000, B2=99900000000
2024-11-15masserNF-PP1
Start=2/7, B1=100000000, B2=99900000000
2024-07-01kkmrkkblmbrbkC-PRP
M26893/10187200697468911332175466729/184216309259209 : 0EB907851FFBD34B
PRP: Verified
PRP without proof (small exponent)
2023-04-12nordiNF-PM1
B1=5000000000, B2=1516930270635780
2023-03-10nordiNF-PM1
B1=5000000000
2020-04-17Oliver KruseC-PRP
M26893/184216309259209/10187200697468911332175466729 : 0EB907851FFBD34B
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M26893/184216309259209/10187200697468911332175466729 : D58F070950DBBB46
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M26893/184216309259209/10187200697468911332175466729 : D58F070950DBBB46
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M26893/known_factors : D58F070950DBBB46
PRP without proof (not generated)
2016-12-15kkmrkkblmbrbkNF-PM1
B1=500000000, B2=10000000000, E=12
2011-03-21James HintzF-ECM
Factor: 10187200697468911332175466729