is 2 78647759 - 1
has 23675335 decimal digits
takes 245.419 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
Actual27597.293464.0000%6600006600002.98631.5558%100.279764.5601%0.5601%
PrimeNet2716.078761.9718%340000160000005.39895.2360%11.477663.9630%1.9911%
GPU7227597.293464.0000%500000170000006.32993.7747%103.623365.3589%1.3589%
Difference---+160000-16340000-3.3436-2.2190%-3.3436-0.7988%-0.7988%

Known prime factors (1 factor, 88.6 bits, 0.00011270% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
786477594797795494129528479461576792788.6333050179404431300121
3 × 139 × 379 × 5857 × 16741 × 196831
2016-06-1816741196831966,2890.12010.1542

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-06-18T22:28:05Jwb52zClay6600006600002788.6332.986490.85.9731.556%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-02-24T00:00:00Jocelyn Larouchev4_computers21257--0.000--
2008-01-15T00:00:001997rj7v4_computers21263--0.020--
2008-03-11T00:00:001997rj7v4_computers21264--0.045--
2010-11-06T15:28:00hreidacer9264265--0.048--
2011-02-03T16:04:00trifdale265266--0.095--
2011-02-09T07:35:00Donna NobleHTPC-V64266267--0.190--
2011-02-12T00:01:00opyrtZapp267268--0.380--
2013-02-11T03:47:00Clown_RoyalManual testing268269--0.760--
2013-02-13T23:15:00rx7350RMCpc12269270--1.520--
2013-06-10T04:14:00frolyar270271--3.040--
2014-03-01T11:43:00ANONYMOUS271272--6.081--
2016-06-10T21:45:32AirSquirrelsManual testing272273--12.16--
2016-06-10T22:25:27AirSquirrelsManual testing273274--24.32--
2016-06-10T23:50:30AirSquirrelsManual testing274275--48.65--


ECM factoring results:
No ECM results for M78647759


Lucas-Lehmer results:
No L-L results for M78647759


PRP results:
No PRP results for M78647759


P-1 factor-bounds graph:
B1 = 660000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
264
263
257
250
260
270
280
290
2100
Last modified: 2016-06-18T22:28:05+00:00