is 2 58212293 - 1
has 17523647 decimal digits
takes 123.378 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
Actual2718.212763.3803 %----8.212763.3803 %
Target27332.859864.3836 %4000006500000012.04574.0792 %44.905565.8364 %
Difference-2-24.6471-1.0033 %-400000-65000000-12.0457-4.0792 %-36.6928-2.4561 %

Known prime factors (1 factor, 78.2 bits, 0.00013438% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
582122933533054045597426894476632478.2253034628824531467
3 × 20681 × 218591 × 223759
2012-02-042185912237592,000.10.67261.3672

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-02-04zampelkodaly2478.2251.9050.000%


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
2002-08-24ANONYMOUSv4_computers212580.001
2003-07-30ANONYMOUSv4_computers212590.001
2003-11-28ANONYMOUSv4_computers212610.003
2008-10-28Sturle Sundeagrell.ifi2632640.032
2008-11-19ITSv4_computers212691.990
2008-11-27ITSv4_computers212691.027
2011-06-29Ruslanodc2692702.054
2011-10-01GregManual testing2702714.108


ECM factoring results:
No ECM results for M58212293


Lucas-Lehmer results:
No L-L results for M58212293


PRP results:
No PRP results for M58212293


CERT results:
No CERT results for M58212293


P-1 factor-bounds graph:
104
105
106
104
105
106
TF factor-bounds graph:
271
270
269
264
261
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