is 2 107487647 - 1
has 32357006 decimal digits
takes 440.849 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
Actual276142.379164.4737 %7750007750004.60891.5576 %146.988065.0270 %
Target276142.379164.4737 %70000012000000042.81733.9769 %185.196465.8865 %
Difference---+75000-119225000-38.2083-2.4193 %-38.2083-0.8595 %

Known prime factors (1 factor, 78.9 bits, 0.00007343% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1074876475770550576421789310138732478.9332684285467902088
23 × 257 × 311 × 41669 × 100747
2021-11-2541669100747569.520.26690.5043

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-11-25MarkSdesktop-i777500077500012478.9334.6091.558%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-29Richard2632640.018
2010-09-08LordJuliusvaio2642650.035
2012-05-23Richard2652660.070
2013-09-18RobishManual testing2662670.139
2013-09-20RobishManual testing2672680.278
2013-09-22RobishManual testing2682690.556
2013-09-25RobishManual testing2692701.112
2013-10-04Stuart Thompsonserver2702712.225
2015-01-20SWL551Manual testing2712724.449
2020-03-23Niels_Mache_NextcloudManual testing2722738.899
2020-03-23Niels_Mache_NextcloudManual testing27327417.80
2021-04-16TheJudgerManual testing27427535.60
2021-04-16TheJudgerManual testing27527671.19


ECM factoring results:
No ECM results for M107487647


Lucas-Lehmer results:
No L-L results for M107487647


PRP results:
No PRP results for M107487647


CERT results:
No CERT results for M107487647


P-1 factor-bounds graph:
B1 = 775000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-02-09T03:30:02+00:00