is 2 78956701 - 1
has 23768336 decimal digits
takes 246.383 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
Actual27596.912764.0000 %6900006900003.12201.5871 %100.034864.5714 %
Target27596.912764.0000 %5000008500000023.09323.7766 %120.005965.3596 %
Difference---+190000-84310000-19.9711-2.1895 %-19.9711-0.7882 %

Known prime factors (1 factor, 82.0 bits, 0.00010390% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7895670149548090699901314011681692582.03531376748314181284
22 × 7 × 41 × 2273 × 57493 × 209147
2016-03-065749320914718,6450.29750.5294

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-03-06TheJudgerManual testing69000069000012582.0353.6241.587%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-06-23Jossv4_computers212570.000
2003-06-30Jossv4_computers212600.001
2005-02-12ramgeisv4_computers212610.002
2008-06-23ANONYMOUSManual testing212640.024
2010-12-04riccardo ubertiDuallie2642650.047
2010-12-05ANONYMOUS2652660.095
2010-12-05gkwarei72662670.189
2010-12-20gkwarei72672680.379
2010-12-25GIMP Philippines333Six2682690.757
2011-01-09ANONYMOUS2692701.514
2013-02-11Clown_RoyalManual testing2702713.029
2016-02-22apocalypseManual testing27127590.86


ECM factoring results:
No ECM results for M78956701


Lucas-Lehmer results:
No L-L results for M78956701


PRP results:
No PRP results for M78956701


CERT results:
No CERT results for M78956701


P-1 factor-bounds graph:
B1 = 690000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
275
271
270
269
268
267
266
265
264
261
260
257
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00