is 2 78804301 - 1
has 23722459 decimal digits
takes 245.908 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
Actual27597.100164.0000 %6650006650003.00891.5614 %100.109164.5621 %
Target27597.100164.0000 %5000008500000023.09323.7757 %120.193365.3592 %
Difference---+165000-84335000-20.0842-2.2143 %-20.0842-0.7972 %

Known prime factors (1 factor, 79.5 bits, 0.00010087% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
788043018499320106513850262274792479.4925392675271946039
3 × 7 × 113 × 31 × 21991 × 283009
2016-07-24219912830092,252.80.16380.2025

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-07-24mgpainter4ghz_quad_core66500066500012479.4923.1061.561%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-06-23Jossv4_computers212570.000
2008-01-151997rj7v4_computers212630.012
2008-05-101997rj7v4_computers212640.025
2011-03-16manskyKJM22642650.047
2011-03-19symalladSchool_Laptop2652660.095
2011-03-26centylion torunintel12662670.190
2012-04-03RixenRXN2672680.379
2012-04-09symalladSchool_Laptop2682690.759
2013-02-11Clown_RoyalManual testing2692701.517
2013-06-15PVasilev2702713.034
2016-02-06RichD0Manual testing2712726.069
2016-06-28hiner112Manual testing27227312.14
2016-07-03TheJudgerManual testing27327572.83


ECM factoring results:
No ECM results for M78804301


Lucas-Lehmer results:
No L-L results for M78804301


PRP results:
No PRP results for M78804301


CERT results:
No CERT results for M78804301


P-1 factor-bounds graph:
B1 = 665000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
275
273
272
271
270
269
268
267
266
265
264
263
257
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00