is 2 78466369 - 1
has 23620731 decimal digits
takes 244.853 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
Actual27597.518364.0000 %660000132000006.07763.7224 %103.596065.3401 %
Target27597.518364.0000 %5000008500000023.09323.7737 %120.611565.3585 %
Difference---+160000-71800000-17.0155-0.0512 %-17.0155-0.0184 %

Known prime factors (1 factor, 79.2 bits, 0.00010094% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
784663696977147107206978754346172479.2074445947477961532
22 × 32 × 59 × 317 × 4691 × 1407619
2016-06-10469114076191,665.70.36710.6481

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-06-10James Heinrich3930K66000013200000622479.2076.0783.722%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2002-02-24Jossv4_computers212570.000
2004-04-09AxelFoxv4_computers212620.004
2008-04-241997rj7v4_computers212640.025
2010-11-07Vítor Saruga2642650.048
2010-11-09JMGarciacarriel2652660.095
2011-01-13Aaron HavilandManual testing2662670.190
2011-01-18drewha - Belarusnone2672680.381
2011-01-20SidProsebud1232682690.762
2011-02-03Jeff_GilchristCeleron_900MHz2692701.524
2013-01-13Charles A. Morrischandra2702713.048
2015-07-20RichD0Manual testing2712726.095
2016-05-24BdotManual testing27227312.19
2016-05-30AirSquirrelsManual testing27327573.14


ECM factoring results:
No ECM results for M78466369


Lucas-Lehmer results:
No L-L results for M78466369


PRP results:
No PRP results for M78466369


CERT results:
No CERT results for M78466369


P-1 factor-bounds graph:
B1 = 660000, B2 = 13200000 (P-1 stage 2)
B1 = 660000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
275
273
272
271
270
269
268
267
266
265
264
262
257
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00