is 2 79519379 - 1
has 23937719 decimal digits
takes 248.139 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
Actual27596.227064.0000 %6650006650003.00891.5635 %99.235964.5629 %
Target27596.227064.0000 %5000008500000023.09323.7799 %119.320165.3608 %
Difference---+165000-84335000-20.0842-2.2165 %-20.0842-0.7979 %

Known prime factors (1 factor, 90.3 bits, 0.00011350% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7951937914741873909698231352922018312890.2529269359302779660385
32 × 5 × 7 × 1987 × 3079 × 26041 × 184703
2016-10-06260411847036,091,4830.15690.2398

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-10-06Brian Beuninghp8300f66500066500012890.2523.0091.563%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2009-05-29Architects Cubedm1_372632640.025
2010-11-29Architects Cubedm1_042642650.047
2010-12-03Fred Cirera2652660.094
2010-12-08Helmut Zulushb-kollmann2662670.188
2012-10-26AxelssonManual testing2672680.376
2013-01-23Jonathan A ZylstraHP2682690.752
2013-01-27SWL551Manual testing26927210.53
2016-08-17AirSquirrelsManual testing27227584.20


ECM factoring results:
No ECM results for M79519379


Lucas-Lehmer results:
No L-L results for M79519379


PRP results:
No PRP results for M79519379


CERT results:
No CERT results for M79519379


P-1 factor-bounds graph:
B1 = 665000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
275
272
269
268
267
266
265
264
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00