is 2 57580427 - 1
has 17333436 decimal digits
takes 122.039 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
Actual27333.220464.3836 %----33.220464.3836 %
Target27333.220464.3836 %4000006500000012.04574.0736 %45.266065.8344 %
Difference----400000-65000000-12.0457-4.0736 %-12.0457-1.4509 %

Known prime factors (1 factor, 99.3 bits, 0.00017240% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
575804277641616563792399532426109532073099.2706635602549276336151889
3 × 232 × 863 × 17989 × 153911 × 1749911
2012-09-1415391117499112.840e+90.74020.9626

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-09-14S01103In-Laws3099.2703.3320.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.08000e-5
2000-03-08ANONYMOUSv4_computers212544.17000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2001-09-30ANONYMOUSv4_computers212570.000
2002-11-24ANONYMOUSv4_computers212580.001
2003-08-25Team Prime Ribv4_computers212600.001
2008-10-29Team_InspectorBush2632640.033
2008-10-31Team_InspectorBush2642650.065
2008-11-18tscv4_computers212691.947
2008-11-27tscv4_computers212691.038
2011-06-30UngelovendeManual testing26927214.54
2012-08-28Craig MeyersManual testing27227316.61


ECM factoring results:
No ECM results for M57580427


Lucas-Lehmer results:
No L-L results for M57580427


PRP results:
No PRP results for M57580427


CERT results:
No CERT results for M57580427


P-1 factor-bounds graph:
104
105
106
104
105
106
107
TF factor-bounds graph:
273
272
269
265
264
260
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00