is 2 54530687 - 1
has 16415373 decimal digits
takes 107.736 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
Actual2718.767163.3803 %----8.767163.3803 %
Target27335.078364.3836 %3600006000000010.33993.9258 %45.418265.7818 %
Difference-2-26.3112-1.0033 %-360000-60000000-10.3399-3.9258 %-36.6511-2.4015 %

Known prime factors (1 factor, 79.0 bits, 0.00014491% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
545306876135998452380648306052332479.0225626188472905768
23 × 3 × 17 × 61 × 463741 × 487471
2011-10-254637414874712,618.41.33222.7037

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-10-25Stephan GruppnewEvie2479.0221.6470.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-15ANONYMOUSv4_computers212532.20000e-5
2000-03-01ANONYMOUSv4_computers212544.40000e-5
2000-05-31ANONYMOUSv4_computers212560.000
2001-08-31ANONYMOUSv4_computers212570.000
2002-09-14ANONYMOUSv4_computers212580.001
2008-07-03monstguinness2622630.018
2008-12-30ANONYMOUS2632640.036
2009-03-09korvacbd3k2642650.069
2009-03-11JamesVHPdesk2652660.137
2009-05-14Hartmuth GutscheSaturn2662670.274
2009-05-17Ilya S. Sapytskyrender2672680.548
2011-03-30UngelovendeManual testing2682691.096
2022-06-06LordJuliusManual testing21270
2011-05-23firejugglerManual testing2692702.193
2011-07-30TheJudgerManual testing2702714.385


ECM factoring results:
No ECM results for M54530687


Lucas-Lehmer results:
No L-L results for M54530687


PRP results:
No PRP results for M54530687


CERT results:
No CERT results for M54530687


P-1 factor-bounds graph:
104
105
106
104
105
106
TF factor-bounds graph:
271
270
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