is 2 67055309 - 1
has 20185660 decimal digits
takes 169.501 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
Actual2717.129663.3803 %----7.129663.3803 %
Target27457.055464.8649 %4500007500000016.53663.9288 %73.592066.2453 %
Difference-3-49.9258-1.4846 %-450000-75000000-16.5366-3.9288 %-66.4624-2.8650 %

Known prime factors (1 factor, 92.3 bits, 0.00013771% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6705530962746425056339639997874346412892.34246787067267365541480
23 × 3 × 5 × 7 × 13 × 37 × 1427 × 11299 × 7181869
2013-08-2011299718186923,116,0071.47332.6786

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2013-08-20HBendtzHAL90072892.3426.1740.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-12-11Wojciech FlorekManual testing212640.029
2009-03-30ANONYMOUSeinstein2642650.056
2009-12-28cesantoGhost2652660.111
2009-12-31cesantoGhost2662670.223
2010-01-01GrunwalderGIMPcompute-0-22672680.446
2010-01-02HighPriceRanchRanchPrimecd2682690.892
2012-02-15GrunwalderGIMPLyc-i72692701.783
2012-08-16Clown_RoyalManual testing2702713.566


ECM factoring results:
No ECM results for M67055309


Lucas-Lehmer results:
No L-L results for M67055309


PRP results:
No PRP results for M67055309


CERT results:
No CERT results for M67055309


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
271
270
269
268
267
266
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