is 2 58910237 - 1
has 17733749 decimal digits
takes 130.871 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
Actual27332.470564.3836%----32.470564.3836%
Target27332.470564.3836%40000011200000020.87444.1435%53.344965.8593%
Difference----400000-112000000-20.8744-4.1435%-20.8744-1.4758%

Known prime factors (1 factor, 64.6 bits, 0.00010971% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
58910237285740245556812526332064.631242521724668
22 × 17 × 29 × 409 × 300691		2012-11-184093006910.11100.05400.0986

P-1 results:
No P-1 results for M58910237


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2012-11-18TheJudgerManual testing??64.631200.051297.80.115
1999-12-23ANONYMOUSv4_computers21253--2.03687e-5--
2000-02-09ANONYMOUSv4_computers21254--4.07373e-5--
2000-06-23ANONYMOUSv4_computers21256--0.000--
2001-06-09ANONYMOUSv4_computers21257--0.000--
2002-11-02ANONYMOUSv4_computers21258--0.001--
2003-07-30ANONYMOUSv4_computers21259--0.001--
2004-01-181997rj7v4_computers21260--0.003--
2022-06-27LordJuliusManual testing260263--0.024--
2008-11-04KYOJI_KAMEIwlaptop263264--0.033--
2008-11-05KYOJI_KAMEIwlaptop264265--0.063--
2008-11-05KYOJI_KAMEIwlaptop265266--0.127--
2008-11-05KYOJI_KAMEIwlaptop266267--0.254--
2008-11-07KYOJI_KAMEIwlaptop267268--0.507--
2009-08-20feynmannchunsang268269--1.015--
2011-05-24ASTERIASManual testing269270--2.030--
2012-03-01GregManual testing270271--4.059--
2012-06-30Tom DuellManual testing271272--8.118--
2012-10-12Craig MeyersManual testing272273--16.24--


ECM factoring results:
No ECM results for M58910237


Lucas-Lehmer results:
No L-L results for M58910237


PRP results:
No PRP results for M58910237


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
263
260
259
258
257
256
254
253
2
this exponent TF target: 73
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00