is 2 55494631 - 1
has 16705549 decimal digits
takes 117.618 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
Actual2704.305862.8571 %----4.305862.8571 %
Target27334.469064.3836 %3600006000000011.09223.9345 %45.561265.7849 %
Difference-3-30.1632-1.5264 %-360000-60000000-11.0922-3.9345 %-41.2554-2.9278 %

Known prime factors (1 factor, 70.9 bits, 0.00012771% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5549463121648040906229496074412270.87519504626408120
23 × 3 × 5 × 7 × 41 × 109 × 5195747
2012-04-0410951957477.83140.87031.6248

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-04-04bcp19Manual testing2270.8752.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-15ANONYMOUSv4_computers212532.16000e-5
2000-03-01ANONYMOUSv4_computers212544.32000e-5
2000-05-31ANONYMOUSv4_computers212560.000
2001-09-30ANONYMOUSv4_computers212570.000
2002-07-27ANONYMOUSv4_computers212580.001
2022-06-14LordJuliusManual testing21263
2009-01-141997rj7compw2632640.035
2009-03-18Sturle Sundeeames.ifi2642650.067
2009-03-25Abadpruebas42652660.135
2009-03-30ANONYMOUS2662670.269
2009-05-14ANONYMOUS2672680.539
2011-04-08Åke TilanderPC51-115-092682691.077
2011-05-31GuloGuloPhenom_II_X6_1055T2692702.155


ECM factoring results:
No ECM results for M55494631


Lucas-Lehmer results:
No L-L results for M55494631


PRP results:
No PRP results for M55494631


CERT results:
No CERT results for M55494631


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
TF factor-bounds graph:
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