is 2 51699031 - 1
has 15562960 decimal digits
takes 99.042 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
Actual2681.152961.7647 %----1.152961.7647 %
Target27336.999664.3836 %340000550000009.21693.8024 %46.216565.7378 %
Difference-5-35.8467-2.6189 %-340000-55000000-9.2169-3.8024 %-45.0636-3.9731 %

Known prime factors (1 factor, 80.4 bits, 0.00015546% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5169903115640024027978195164113532580.37215126032079767796
22 × 3 × 11 × 53 × 264871 × 8162831
2010-02-2126487181628317,848.91.93112.3074

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-02-21Roman Maznichenkox64-Prime2580.3724.8250.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-01-04ANONYMOUSv4_computers212532.32000e-5
2000-02-16ANONYMOUSv4_computers212544.64000e-5
2000-04-27ANONYMOUSv4_computers212560.000
2001-05-27ANONYMOUSv4_computers212570.000
2002-03-10ANONYMOUSv4_computers212580.001
2003-11-28apocalypsev4_computers212600.001
2022-04-05LordJuliusManual testing260263
2009-01-30ANONYMOUS2632650.110
2009-01-31ANONYMOUS2652670.434
2009-04-19ITSWUV2672680.578


ECM factoring results:
No ECM results for M51699031


Lucas-Lehmer results:
No L-L results for M51699031


PRP results:
No PRP results for M51699031


CERT results:
No CERT results for M51699031


P-1 factor-bounds graph:
104
105
106
104
105
106
107
TF factor-bounds graph:
268
267
265
263
260
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
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290
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Last modified: 2024-03-13T02:15:48+00:00