is 2 79178387 - 1
has 23835070 decimal digits
takes 247.075 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
Actual27596.641464.0000 %6650006650003.00891.5625 %99.650364.5625 %
Target27596.641464.0000 %5000008500000023.09323.7779 %119.734565.3601 %
Difference---+165000-84335000-20.0842-2.2154 %-20.0842-0.7976 %

Known prime factors (1 factor, 83.1 bits, 0.00010493% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
79178387102450733767914938167261772683.08364696148563821424
24 × 13 × 173 × 577 × 6197 × 502819
2016-08-26619750281937,2930.15050.2315

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-08-26baseyDL66500066500012683.0833.0091.562%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-30ANONYMOUSv4_computers212531.52000e-5
2001-06-17Jossv4_computers212570.000
2001-09-30Jossv4_computers212590.000
2004-08-06ANONYMOUSv4_computers212630.012
2016-04-05Mark RoseManual testing263264
2010-11-24Xyzzy32642650.047
2010-11-29Michael CManual testing2652660.094
2010-11-30eon_blue_apocalypse8cylinder2662670.189
2011-01-31vapaddynita2672680.378
2011-02-06opyrtNibbler2682690.755
2011-02-09opyrtNibbler2692701.510
2013-01-19Bold_SeekerManual testing2702713.020
2016-02-16Robin89Manual testing2712726.040
2016-07-16AirSquirrelsManual testing27227584.56


ECM factoring results:
No ECM results for M79178387


Lucas-Lehmer results:
No L-L results for M79178387


PRP results:
No PRP results for M79178387


CERT results:
No CERT results for M79178387


P-1 factor-bounds graph:
B1 = 665000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
TF factor-bounds graph:
275
272
271
270
269
268
267
266
265
264
263
259
257
253
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