is 2 54754877 - 1
has 16482861 decimal digits
takes 108.179 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
Actual27217.465763.8889 %----17.465763.8889 %
Target27334.934764.3836 %3600006000000010.33993.9278 %45.274665.7825 %
Difference-1-17.4690-0.4947 %-360000-60000000-10.3399-3.9278 %-27.8089-1.8936 %

Known prime factors (1 factor, 72.5 bits, 0.00013233% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5475487764854302144968151609512272.45859222397801175
52 × 7 × 19 × 967 × 4019 × 4583
2012-05-204019458330.8320.01160.0234

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-05-20owftheevilManual testing2272.4582.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-15ANONYMOUSv4_computers212532.19000e-5
2000-03-01ANONYMOUSv4_computers212544.38000e-5
2000-06-11ANONYMOUSv4_computers212560.000
2001-08-31ANONYMOUSv4_computers212570.000
2002-09-29ANONYMOUSv4_computers212580.001
2008-07-29ANONYMOUSManual testing212630.018
2009-02-27bayanneMacBook2632640.036
2009-02-28bayanneMacBook2642650.068
2009-03-02bayanneMacBook2652660.136
2009-03-04bayanneMacBook2662670.273
2009-05-10Sturle Sundepelele.ifi2672680.546
2011-03-31steinrarManual testing2682691.092
2011-10-08DubslowManual testing2692716.551
2012-05-14Kyle AskineManual testing2712728.734


ECM factoring results:
No ECM results for M54754877


Lucas-Lehmer results:
No L-L results for M54754877


PRP results:
No PRP results for M54754877


CERT results:
No CERT results for M54754877


P-1 factor-bounds graph:
102
103
104
102
103
104
TF factor-bounds graph:
272
271
269
268
267
266
265
264
263
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