is 2 68732597 - 1
has 20690574 decimal digits
takes 183.764 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
Actual2716.955661.9718 %----6.955661.9718 %
Target27455.663063.5135 %4500007500000017.49063.9409 %73.153764.9514 %
Difference-3-48.7074-1.5417 %-450000-75000000-17.4906-3.9409 %-66.1980-2.9796 %

Known prime factors (1 factor, 85.0 bits, 0.00012366% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
68732597385812720995213969379334012684.996280662115091631100
22 × 52 × 821 × 295591 × 11565101
2013-10-202955911156510163,4173.52624.5623

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2013-10-20Jwb52zClay2684.9966.1900.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2004-03-08mdrgv4_computers212600.001
2004-07-26mdrgv4_computers212610.002
2008-10-271997rj7Manual testing212640.027
2010-01-28Frank BalzerBerlinOrgano2642650.054
2010-04-07ANONYMOUS2652660.109
2010-04-22Team_Inspectorspudboy22662670.217
2010-04-29Scuderposao_laptop2672680.435
2010-04-30GrunwalderGIMPcompute-0-72682690.870
2012-03-15qwertyuio999PC62692701.740
2012-08-05SMoffatManual testing2702713.479


ECM factoring results:
No ECM results for M68732597


Lucas-Lehmer results:
No L-L results for M68732597


PRP results:
No PRP results for M68732597


CERT results:
No CERT results for M68732597


P-1 factor-bounds graph:
104
105
106
104
105
106
107
108
TF factor-bounds graph:
271
270
269
268
267
266
265
264
261
260
this exponent TF target: 74
TF double-checked to: 67
250
260
270
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290
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Last modified: 2024-03-13T02:15:48+00:00