is 2 62934407 - 1
has 18945145 decimal digits
takes 147.838 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
Actual27330.394364.3836 %----30.394364.3836 %
Target27460.791364.8649 %4000006500000013.35073.7289 %74.142066.1750 %
Difference-1-30.3971-0.4813 %-400000-65000000-13.3507-3.7289 %-43.7478-1.7914 %

Known prime factors (1 factor, 73.6 bits, 0.00011701% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
62934407147119816432977832529132373.639116883453301608
23 × 3 × 72 × 29 × 181 × 191 × 99137
2013-08-031919913748.0800.01900.0344

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2013-08-03Massimo Cappelli (ik5pwa)maxwin7_VPN-PA2373.6392.0750.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-07-21Gordon Spencev4_computers212590.001
2022-03-30LordJuliusManual testing21263
2009-02-04Wojciech Florekarmada22632640.031
2009-02-28Robert Walkermach2392642650.059
2009-03-01glennpatLinux-32652660.119
2009-03-06Dk SystemsFrontdesk32662670.237
2009-03-12Dk SystemsFrontdesk32672680.475
2009-08-08willmoretrans2682690.950
2011-12-28NBBlackBird2692701.900
2013-03-25Craig MeyersManual testing27027326.60


ECM factoring results:
No ECM results for M62934407


Lucas-Lehmer results:
No L-L results for M62934407


PRP results:
No PRP results for M62934407


CERT results:
No CERT results for M62934407


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
TF factor-bounds graph:
273
270
269
268
267
266
265
264
263
259
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00