is 2 57443879 - 1
has 17292331 decimal digits
takes 121.749 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
Actual27333.299464.3836 %----33.299464.3836 %
Target27333.299464.3836 %4000006500000012.04574.0724 %45.345065.8340 %
Difference----400000-65000000-12.0457-4.0724 %-12.0457-1.4504 %

Known prime factors (1 factor, 83.3 bits, 0.00014494% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
57443879115641366022462239132100012683.258100655951543995000
23 × 54 × 61 × 67 × 1483 × 3321419
2012-09-161483332141941,4830.56041.0387

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-09-16hustensaftW8hm2683.2581.4090.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.09000e-5
2000-03-08ANONYMOUSv4_computers212544.18000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2001-09-22ANONYMOUSv4_computers212570.000
2002-11-16ANONYMOUSv4_computers212580.001
2003-08-25Team Prime Ribv4_computers212600.001
2022-06-27LordJuliusManual testing260263
2009-01-10Sturle Sundegluck.ifi2632650.099
2009-01-11Sturle Sundegimba.ifi2652660.130
2009-01-13tmorrowMoo32662670.260
2009-06-02Sturle Sundecassis.flu2672680.520
2011-11-20rduerrManual testing2682703.122
2011-12-31therealwebsManual testing2702714.163
2012-05-28bcp19Manual testing2712728.326
2012-09-09Kyle AskineManual testing27227316.65


ECM factoring results:
No ECM results for M57443879


Lucas-Lehmer results:
No L-L results for M57443879


PRP results:
No PRP results for M57443879


CERT results:
No CERT results for M57443879


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
273
272
271
270
268
267
266
265
263
260
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00