is 2 67379467 - 1
has 20283241 decimal digits
takes 170.320 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
Actual27456.780963.5135 %6100006100002.23581.6494 %59.016764.1153 %
Target27456.780963.5135 %4500007500000016.53663.9312 %73.317564.9479 %
Difference---+160000-74390000-14.3008-2.2818 %-14.3008-0.8326 %

Known prime factors (1 factor, 95.2 bits, 0.00014126% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
67379467449288490097677618581507643432995.182333401635618220027313
32 × 7 × 13 × 2381 × 19709 × 36677 × 236519
2014-05-1836677236519158,597,7780.17430.2736

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-05-18TheJudgerManual testing61000061000012995.1822.9321.649%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-12-09Wojciech FlorekManual testing2632640.029
2010-03-01HighPriceRanchUD3ab2642650.055
2010-03-04ANONYMOUS2652670.333
2010-03-10Michael Hanschoimbm-heimo2672680.444
2010-03-16Michael Hanschoimbm-heimo2682690.887
2013-04-26Lukin DmitryManual testing2692701.774
2013-06-27SMoffatManual testing2702713.549
2014-05-04garoManual testing27127321.29
2014-05-11TheJudgerManual testing27327428.39


ECM factoring results:
No ECM results for M67379467


Lucas-Lehmer results:
No L-L results for M67379467


PRP results:
No PRP results for M67379467


CERT results:
No CERT results for M67379467


P-1 factor-bounds graph:
B1 = 610000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
274
273
271
270
269
268
267
265
264
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00