is 2 55284707 - 1
has 16642356 decimal digits
takes 117.173 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
Actual2692.159562.3188 %----2.159562.3188 %
Target27334.599964.3836 %3600006000000011.09223.9326 %45.692165.7842 %
Difference-4-32.4404-2.0647 %-360000-60000000-11.0922-3.9326 %-43.5326-3.4654 %

Known prime factors (1 factor, 69.7 bits, 0.00012612% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
552847079745201493416230706732169.7238813650304248
23 × 1101706288031
2011-06-21811017062880312.3130184,465344,530

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-06-21shaugeManual testing2169.7232.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-15ANONYMOUSv4_computers212532.17000e-5
2000-03-01ANONYMOUSv4_computers212544.34000e-5
2000-05-31ANONYMOUSv4_computers212560.000
2001-09-16ANONYMOUSv4_computers212570.000
2002-07-14ANONYMOUSv4_computers212580.001
2008-10-271997rj7Manual testing212640.034
2009-01-07benthomasLaptop2642650.068
2009-01-22benthomasLaptop2652660.135
2009-01-23jfarekCarnegie12662670.270
2009-05-18ANONYMOUS2672680.541
2011-04-13Per Jessenkavanagh2682691.081


ECM factoring results:
No ECM results for M55284707


Lucas-Lehmer results:
No L-L results for M55284707


PRP results:
No PRP results for M55284707


CERT results:
No CERT results for M55284707


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
269
268
267
266
265
264
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