is 2 51018589 - 1
has 15358126 decimal digits
takes 93.463 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
Actual2681.168361.7647 %----1.168361.7647 %
Target27337.493164.3836 %340000550000008.81373.7959 %46.306865.7355 %
Difference-5-36.3248-2.6189 %-340000-55000000-8.8137-3.7959 %-45.1385-3.9708 %

Known prime factors (1 factor, 84.8 bits, 0.00016615% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
51018589328901474426510522578842412684.766322334937983595080
23 × 5 × 5003 × 306259 × 5259301
2009-07-21306259525930196,0741.53031.6557

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-21kmdZeus2684.7664.7720.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-15ANONYMOUSv4_computers212532.35000e-5
2000-02-16ANONYMOUSv4_computers212544.70000e-5
2000-04-05ANONYMOUSv4_computers212560.000
2001-04-15ANONYMOUSv4_computers212570.000
2001-10-25ANONYMOUSv4_computers212580.001
2003-10-14apocalypsev4_computers212600.002
2022-04-05LordJuliusManual testing260263
2008-11-28dmbeesonfrodo2632640.038
2008-11-29dmbeesonfrodo2642650.073
2008-12-01Sturle Sundeoostende.ifi2652660.146
2008-12-04Sturle Sundeoostende.ifi2662670.293
2009-04-16CubeQuest.orgvulcan2672680.586


ECM factoring results:
No ECM results for M51018589


Lucas-Lehmer results:
No L-L results for M51018589


PRP results:
No PRP results for M51018589


CERT results:
No CERT results for M51018589


P-1 factor-bounds graph:
104
105
106
104
105
106
107
TF factor-bounds graph:
268
267
266
265
264
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