is 2 70643519 - 1
has 21265819 decimal digits
takes 188.873 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
Actual27327.077463.0137 %690000151800005.73554.6011 %32.812964.7155 %
Target27454.157363.5135 %4500008000000018.54674.0034 %72.704164.9742 %
Difference-1-27.0799-0.4998 %+240000-64820000-12.8112+0.5977%-39.8912-0.2587 %

Known prime factors (1 factor, 86.5 bits, 0.00012243% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
706435191083365499726581323362356232786.486766783361773485069
3 × 13 × 37201 × 134503 × 3929357
2014-11-231345033929357325,9881.32301.5501

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-11-23TheJudgerManual testing690000151800001222786.4866.0484.184%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2007-10-17Amperiov4_computers212630.014
2008-11-23Wojciech FlorekManual testing212640.028
2010-04-24lindedDFSM6GJ1-SH1352642650.053
2010-04-30MarzbugLaptop2652660.106
2010-07-14Kelly Lowderupstairs2662670.212
2010-08-03Kelly Lowderupstairs2672680.423
2010-08-04kevindorekens2682690.846
2012-11-10E.Lechneramd_fx81502692701.693
2013-07-09Panos KalatzantonakisCodedK2702713.385
2014-10-09NickOfTimeManual testing2712726.770
2014-11-17Zr40Manual testing27227313.54


ECM factoring results:
No ECM results for M70643519


Lucas-Lehmer results:
No L-L results for M70643519


PRP results:
No PRP results for M70643519


CERT results:
No CERT results for M70643519


P-1 factor-bounds graph:
B1 = 690000, B2 = 15180000 (P-1 stage 2)
B1 = 690000 (P-1 stage 1)
104
105
106
104
105
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108
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
263
this exponent TF target: 74
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00