is 2 66863711 - 1
has 20127983 decimal digits
takes 169.017 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27457.218964.8649%5900005900002.16251.6237%59.381465.4354%0.5705%
PrimeNet2703.573762.8571%280000130000003.56645.3176%7.140164.8322%1.9751%
GPU7227457.218964.8649%450000150000004.55493.9274%61.773866.2448%1.3799%
Difference---+140000-14410000-2.3924-2.3037%-2.3924-0.8094%-0.8094%

Known prime factors (1 factor, 77.3 bits, 0.00011563% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
668637111877216231482511282755692477.3131403763120089544
23 × 3 × 23 × 331 × 57839 × 132833
2013-10-0357839132833555.270.22700.4314

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-10-03T13:34:00Jwb52zClay5900005900002477.3132.163338.04.3251.624%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-05-10T23:40:001997rj7Manual testing21264--0.053--
2009-12-09T09:08:00Robert M.elbandito264265--0.056--
2009-12-11T21:33:00Sturle Sundeinteravia.ifi265266--0.112--
2009-12-17T07:06:00Berdes1bernard-desktop266267--0.224--
2010-02-26T19:56:00NoWhereManbbox_2ndTurion267268--0.447--
2010-03-02T07:41:00korvadualcore1268269--0.894--
2012-03-09T06:45:00Dr. Nowakazm83269270--1.788--
2012-07-13T08:41:00Philipp Westphalgalgo270271--3.576--
2013-09-27T23:26:00kdgehmanManual testing271272--7.153--
2013-09-27T23:26:00kdgehmanManual testing272273--14.31--
2013-09-27T23:26:00kdgehmanManual testing273274--28.61--


ECM factoring results:
No ECM results for M66863711


Lucas-Lehmer results:
No L-L results for M66863711


PRP results:
No PRP results for M66863711


P-1 factor-bounds graph:
B1 = 590000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
250
260
270
280
290
2100
Last modified: 2013-10-03T13:34:49+00:00