is 2 57687089 - 1
has 17365545 decimal digits
takes 122.265 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
Actual27216.577963.8889 %----16.577963.8889 %
Target27333.159064.3836 %4000006500000012.04574.0746 %45.204665.8348 %
Difference-1-16.5810-0.4947 %-400000-65000000-12.0457-4.0746 %-28.6267-1.9459 %

Known prime factors (1 factor, 72.6 bits, 0.00012578% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5768708969514169177897189311212272.55860251063438040
23 × 3 × 5 × 2389 × 210168353
2012-09-03238921016835325.19135.19765.725

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-09-03Jerry HallettManual testing2272.5582.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.08000e-5
2000-03-08ANONYMOUSv4_computers212544.16000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2001-09-30ANONYMOUSv4_computers212570.000
2002-12-02ANONYMOUSv4_computers212580.001
2003-09-21Team Prime Ribv4_computers212600.001
2009-03-21David BessellxRS2632640.034
2009-04-04ANONYMOUSquad2642650.065
2009-04-10ANONYMOUSquad2652660.130
2009-04-10Johannes WeingartnerWaynemachine_V_022662670.259
2009-07-02ANONYMOUSv4_computers212691.554
2009-07-04ANONYMOUSv4_computers212691.036
2011-10-21XyzzyManual testing2692716.218
2012-06-28Tom DuellManual testing2712728.291


ECM factoring results:
No ECM results for M57687089


Lucas-Lehmer results:
No L-L results for M57687089


PRP results:
No PRP results for M57687089


CERT results:
No CERT results for M57687089


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
108
109
TF factor-bounds graph:
272
271
269
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