is 2 58862263 - 1
has 17719307 decimal digits
takes 130.764 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
Actual2718.122063.3803 %----8.122063.3803 %
Target27332.497064.3836 %4000007000000013.50334.1431 %46.000365.8592 %
Difference-2-24.3750-1.0033 %-400000-70000000-13.5033-4.1431 %-37.8783-2.4789 %

Known prime factors (1 factor, 79.7 bits, 0.00013544% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
588622639957958549789568299532172479.7208458694961990816
25 × 3 × 101 × 739 × 9173 × 128693
2012-03-1291731286932,636.50.05050.0601

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-03-12David HruskaDesktopII2479.7202.0290.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.04000e-5
2000-02-09ANONYMOUSv4_computers212544.08000e-5
2000-06-23ANONYMOUSv4_computers212560.000
2001-07-17ANONYMOUSv4_computers212570.000
2002-11-02ANONYMOUSv4_computers212580.001
2003-07-30ANONYMOUSv4_computers212590.001
2004-01-071997rj7v4_computers212600.001
2022-06-27LordJuliusManual testing260263
2008-11-04DoubleAgentDoubleAgent022632640.032
2008-11-06Sturle Sundebakeng.ifi2642650.063
2009-01-18john_slappy2652660.127
2009-01-22mestigoithottentot2662670.254
2009-01-30mestigoithottentot2672680.508
2009-06-10SAHS Physics Clubphysicsclub112682691.016
2011-10-16David HruskaDesktopII2692702.031
2011-12-18Grecohost22702714.063


ECM factoring results:
No ECM results for M58862263


Lucas-Lehmer results:
No L-L results for M58862263


PRP results:
No PRP results for M58862263


CERT results:
No CERT results for M58862263


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
TF factor-bounds graph:
271
270
269
268
267
266
265
264
263
260
259
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