is 2 58258903 - 1
has 17537678 decimal digits
takes 123.477 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
Actual2718.206163.3803 %----8.206163.3803 %
Target27332.833564.3836 %4000006500000012.04574.0796 %44.879265.8366 %
Difference-2-24.6274-1.0033 %-400000-65000000-12.0457-4.0796 %-36.6731-2.4563 %

Known prime factors (1 factor, 80.8 bits, 0.00013861% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5825890320393819236846576222456072580.75417502749096431301
23 × 353 × 457 × 25253 × 186799
2012-02-05252531867995,823.40.10470.1579

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-02-05betacygniKenRemote2580.7541.8590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.06000e-5
2000-02-09ANONYMOUSv4_computers212544.12000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2001-07-17ANONYMOUSv4_computers212570.000
2002-09-22ANONYMOUSv4_computers212580.001
2003-07-30ANONYMOUSv4_computers212590.001
2003-12-13ANONYMOUSv4_computers212610.003
2008-11-12Sid & Andyv4_computers212692.020
2008-11-18Sid & Andyv4_computers212691.026
2011-12-27Craig MeyersManual testing2692702.052
2012-01-03Kyle AskineManual testing2702714.105


ECM factoring results:
No ECM results for M58258903


Lucas-Lehmer results:
No L-L results for M58258903


PRP results:
No PRP results for M58258903


CERT results:
No CERT results for M58258903


P-1 factor-bounds graph:
103
104
105
103
104
105
106
TF factor-bounds graph:
271
270
269
261
259
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