is 2 57916087 - 1
has 17434480 decimal digits
takes 122.750 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
Actual27333.027964.3836 %----33.027964.3836 %
Target27333.027964.3836 %4000006500000012.04574.0766 %45.073565.8355 %
Difference----400000-65000000-12.0457-4.0766 %-12.0457-1.4519 %

Known prime factors (1 factor, 77.0 bits, 0.00013302% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
579160871556323830720535798009372477.0421343602366230764
22 × 17 × 331 × 23071 × 2587423
2012-11-27230712587423883.570.50030.8091

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-11-27Jerry HallettQuadTF2477.0425.7390.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.07000e-5
2000-03-08ANONYMOUSv4_computers212544.14000e-5
2000-06-23ANONYMOUSv4_computers212560.000
2001-09-30ANONYMOUSv4_computers212570.000
2002-12-02ANONYMOUSv4_computers212580.001
2003-11-08Team Prime Ribv4_computers212600.001
2022-06-29LordJuliusManual testing260263
2009-03-13steinrarlianli2632640.034
2009-03-14steinrarlianli2642650.065
2009-03-15steinrarlianli2652670.387
2009-11-29ANONYMOUS2672680.516
2011-04-26ANONYMOUS2682691.032
2011-07-02ANONYMOUS2692702.064
2012-02-19Ethan O'ConnorManual testing2702714.129
2012-06-13Craig MeyersManual testing2712728.258
2012-08-13Kyle AskineManual testing27227316.52


ECM factoring results:
No ECM results for M57916087


Lucas-Lehmer results:
No L-L results for M57916087


PRP results:
No PRP results for M57916087


CERT results:
No CERT results for M57916087


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
273
272
271
270
269
268
267
265
264
263
260
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00