is 2 51761179 - 1
has 15581668 decimal digits
takes 99.161 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
Actual2681.151561.7647 %----1.151561.7647 %
Target27336.955264.3836 %340000550000009.21693.8030 %46.172165.7380 %
Difference-5-35.8037-2.6189 %-340000-55000000-9.2169-3.8030 %-45.0206-3.9733 %

Known prime factors (1 factor, 76.4 bits, 0.00014758% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
51761179991151059377270975586572376.392957427051050432
26 × 33 × 31 × 59 × 433 × 699617
2010-03-14433699617342.510.10700.1978

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-03-14Sturle Sundebadd.ifi2376.3925.1490.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-02-16ANONYMOUSv4_computers212544.64000e-5
2000-04-27ANONYMOUSv4_computers212560.000
2001-05-27ANONYMOUSv4_computers212570.000
2002-03-16ANONYMOUSv4_computers212580.001
2003-11-28apocalypsev4_computers212600.001
2022-04-05LordJuliusManual testing260263
2008-12-01Prime HunterPollux2632640.038
2008-12-02Sturle Sundekrebs.ifi2642650.072
2008-12-04Sturle Sundekrebs.ifi2652660.144
2008-12-06Sturle Sundekrebs.ifi2662670.289
2009-06-28Rassilon621F4LB12672680.577


ECM factoring results:
No ECM results for M51761179


Lucas-Lehmer results:
No L-L results for M51761179


PRP results:
No PRP results for M51761179


CERT results:
No CERT results for M51761179


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
TF factor-bounds graph:
268
267
266
265
264
263
260
258
257
256
254
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