is 2 6457441 - 1
has 1943884 decimal digits
takes 1.210 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2674.601565.6716 %1090001241058001.86566.5060 %6.467167.9050 %
Target2662.287065.1515 %4500050000000.08562.5764 %2.372666.0493 %
Difference+1+2.3145+0.5201 %+64000+119105800+1.7800+3.9296%+4.0945+1.8557 %

Known prime factors (1 factor, 41.4 bits, 0.00064050% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
645744128224699718091341.360218544
24 × 3 × 29 × 157
-291575.915e-89.777e-61.604e-5

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2023-11-20Stef42128G109000124105800
skipped known factor: 2822469971809
--1.8667.190%


Trial Factoring results:
5758596061626364656667
No TF results for M6457441


ECM factoring results:
No ECM results for M6457441


Lucas-Lehmer results:
No L-L results for M6457441


PRP results:
dateuseridcompidcofactorsres64
2017-12-17Chun sung sooTae-Hee_Lee
2822469971809
CFDDB434AD2F024C
2018-07-24kkmrkkblmbrbkc5.large
2822469971809
CFDDB434AD2F024C


CERT results:
No CERT results for M6457441


P-1 factor-bounds graph:
B1 = 109000, B2 = 124105800 (P-1 stage 2)
B1 = 109000 (P-1 stage 1)
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100
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109
TF factor-bounds graph:
this exponent TF target: 66
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00