Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
9833
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
4562513722.1old
18959687743611340.8old
19936154005271340.9old
48906158582140169178364905543173969680739128.52018-06-20 10:51:11
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000006866 / 16550
Estimated T-Level: 47.1
TF below 2^151 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver KruseF718DBB80372D00C3013
Factored
No proof (small exponent)
2017-10-12kkmrkkblmbrbkF718DBB80372D00C3114413
Verified
No proof (small exponent)
2018-06-21Chang Chia-TcheCB974771EB60A3794462953
Verified
No proof (small exponent)
2018-06-21chuenkitCB974771EB60A3794660253
Verified
No proof (small exponent)
2018-06-21francijezekCB974771EB60A3794417353
Verified
No proof (small exponent)
2018-06-22Martin RussellCB974771EB60A379482053
History
DateUserTypeResult
2025-03-21masserNF-PP1Start=156/43, B1=1000000000, B2=999000000000
2023-06-14JacobZNF-PM1B1=58000000000, B2=241250667952694400
2022-02-05JossNF-PM1B1=1000000, B2=6010952007060
2018-06-22Martin RussellC-PRP
M9833/4562513/1895968774361/1993615400527/489061585821401691783649055431739696807 : CB974771EB60A379
2018-06-21francijezekC-PRP
M9833/4562513/1895968774361/1993615400527/489061585821401691783649055431739696807 : CB974771EB60A379
2018-06-21chuenkitC-PRP
M9833/4562513/1895968774361/1993615400527/489061585821401691783649055431739696807 : CB974771EB60A379
2018-06-21Chang Chia-TcheC-PRP
M9833/4562513/1895968774361/1993615400527/489061585821401691783649055431739696807 : CB974771EB60A379
2018-06-20HexaflexagonF-ECMFactor: 489061585821401691783649055431739696807
2017-10-12kkmrkkblmbrbkC-PRPM9833/4562513/1895968774361/1993615400527 : F718DBB80372D00C
2017-09-21Oliver KruseC-PRPM9833/4562513/1895968774361/1993615400527 : F718DBB80372D00C
2017-09-21Oliver KruseC-PRPM9833/4562513/1895968774361/1993615400527 : F718DBB80372D00C