is 2 57972919 - 1
has 17451588 decimal digits
takes 122.870 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
Actual27216.496263.8889 %----16.496263.8889 %
Target27332.995564.3836 %4000006500000012.04574.0771 %45.041165.8357 %
Difference-1-16.4993-0.4947 %-400000-65000000-12.0457-4.0771 %-28.5449-1.9468 %

Known prime factors (1 factor, 72.7 bits, 0.00012539% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5797291976287336846651997877292272.69265795666461656
23 × 3 × 83 × 6637 × 4976639
2012-09-056637497663918.3390.85261.5563

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-09-05Craig MeyersManual testing2272.6922.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.07000e-5
2000-03-08ANONYMOUSv4_computers212544.14000e-5
2000-06-23ANONYMOUSv4_computers212560.000
2001-09-30ANONYMOUSv4_computers212570.000
2002-11-24ANONYMOUSv4_computers212580.001
2003-11-08Team Prime Ribv4_computers212600.001
2022-06-29LordJuliusManual testing260263
2008-10-25lycornP4-32002632640.032
2008-10-27lycornP4-32002642650.064
2008-10-29lycornP4-32002652660.129
2008-10-31lycornP4-32002662670.258
2009-07-30S0003031012672680.516
2011-04-28Tom DuellManual testing2682703.094
2011-10-28phoenicisManual testing27027212.37


ECM factoring results:
No ECM results for M57972919


Lucas-Lehmer results:
No L-L results for M57972919


PRP results:
No PRP results for M57972919


CERT results:
No CERT results for M57972919


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
272
270
268
267
266
265
264
263
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