is 2 78685703 - 1
has 23686757 decimal digits
takes 245.538 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
Actual27597.246564.0000 %6650006650003.00891.5610 %100.255464.5620 %
Target27597.246564.0000 %5000008500000023.09323.7750 %120.339665.3590 %
Difference---+165000-84335000-20.0842-2.2140 %-20.0842-0.7970 %

Known prime factors (1 factor, 101.9 bits, 0.00012956% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
78685703486858157598198019510523800361731101.94130936888089962036655536
24 × 72 × 19 × 1879 × 24551 × 75653 × 595093
2016-06-27756535950932.037e+90.47040.6967

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-06-27Brian Beuninghp8300c665000665000131101.9413.0091.561%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2002-02-24Jossv4_computers212570.000
2008-02-031997rj7v4_computers212630.012
2008-03-291997rj7v4_computers212640.025
2010-11-06Marco Frühbeis3D-PC2642650.047
2011-03-09Ujjwal ChaliseIA_SPG2652660.095
2011-03-10Phr3dtmf_670_xeon2662670.190
2011-03-16Wolfgang Stegerff-vie-srv012672680.380
2012-04-08tmorrowpaperclip2682690.760
2013-02-11Clown_RoyalManual testing2692701.520
2013-05-27sannerud.comJarrett20122702713.039
2015-09-08RichD0Manual testing2712726.078
2016-06-08BdotManual testing27227312.16
2016-06-14AirSquirrelsManual testing27327572.94


ECM factoring results:
No ECM results for M78685703


Lucas-Lehmer results:
No L-L results for M78685703


PRP results:
No PRP results for M78685703


CERT results:
No CERT results for M78685703


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
290
2100
2110
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Last modified: 2024-03-13T02:15:48+00:00