is 2 58935871 - 1
has 17741465 decimal digits
takes 130.928 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2670.504261.1940%----0.504261.1940%0.0000%
PrimeNet2692.025762.3188%260000120000002.89795.6384%4.923664.4435%2.1246%
GPU7227332.456464.3836%400000140000003.67534.1437%36.131765.8594%1.4759%
Difference-6-31.9522-3.1895%-400000-14000000-3.6753-4.1437%-35.6275-4.6654%-4.6654%

Known prime factors (1 factor, 66.6 bits, 0.00011295% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
589358711094493932841533712472166.569928546498313
72 × 5749 × 3296213
2009-01-31574932962130.38850.59601.0805

P-1 results:
No P-1 results for M58935871


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-01-31T23:00:00Sturle Sundeothello.ifi??66.569210.138268.40.283
1999-12-23T00:00:00ANONYMOUSv4_computers21253--2.03598e-5--
2000-02-09T00:00:00ANONYMOUSv4_computers21254--4.07196e-5--
2000-06-23T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-07-29T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-11-02T00:00:00ANONYMOUSv4_computers21258--0.001--
2003-07-30T00:00:00ANONYMOUSv4_computers21259--0.001--
2004-01-27T00:00:001997rj7v4_computers21260--0.003--
TF assumed completed to 67 but no detailed record exists
2009-01-30T15:57:00cnaTb_xo4yManual testing263264--0.033--
2009-01-31T08:45:00poomkcancer.poomk264265--0.063--
2009-01-31T14:36:00Sturle Sundeothello.ifi265266--0.127--


ECM factoring results:
No ECM results for M58935871


Lucas-Lehmer results:
No L-L results for M58935871


PRP results:
No PRP results for M58935871


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
267
266
265
264
260
259
258
257
256
254
253
2
250
260
270
280
290
2100
Last modified: 2009-01-31T23:00:09+00:00