is 2 53042551 - 1
has 15967399 decimal digits
takes 101.616 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
Actual2681.123761.7647 %----1.123761.7647 %
Target27336.062464.3836 %3600006000000010.02613.9120 %46.088665.7769 %
Difference-5-34.9387-2.6189 %-360000-60000000-10.0261-3.9120 %-44.9649-4.0122 %

Known prime factors (1 factor, 71.4 bits, 0.00013462% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5304255131240122953489051475432271.40429448171670221
35 × 113 × 379 × 2829661
2010-04-1037928296619.7570.42920.7999

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-04-10James Heinrichi7-9202271.4044.9950.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-01ANONYMOUSv4_computers212532.26000e-5
2000-03-01ANONYMOUSv4_computers212544.52000e-5
2000-05-17ANONYMOUSv4_computers212560.000
2001-07-17ANONYMOUSv4_computers212570.000
2002-06-09ANONYMOUSv4_computers212580.001
2004-04-201997rj7v4_computers212600.001
2008-10-14ANONYMOUSManual testing212640.035
2009-02-21benthomas192642650.070
2009-02-23curtiscwde2610-01l2652660.141
2009-02-26curtiscwde2610-01l2662670.282
2009-06-27willmorebackup2672680.564


ECM factoring results:
No ECM results for M53042551


Lucas-Lehmer results:
No L-L results for M53042551


PRP results:
No PRP results for M53042551


CERT results:
No CERT results for M53042551


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
TF factor-bounds graph:
268
267
266
265
264
260
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