is 2 73080827 - 1
has 21999522 decimal digits
takes 202.046 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
Actual2680.815660.2941 %----0.815660.2941 %
Target27452.351263.5135 %5000008500000020.46024.1251 %72.811365.0186 %
Difference-6-51.5356-3.2194 %-500000-85000000-20.4602-4.1251 %-71.9957-4.7245 %

Known prime factors (1 factor, 71.0 bits, 0.00009718% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7308082723968796156652984336412271.02216398826573660
22 × 5 × 819941328683
2011-04-1158199413286839.1481179,084334,480

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-04-11ahmeraliv4_computers2271.0225.1620.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-04-14ahmeraliv4_computers??
71.022
22
2008-06-28George WoltmanManual testing212640.026
2010-08-04sunithayaboxx2642650.051
2010-08-17sunithayaboxx2652660.102
2010-08-21Alberto Panu69592662670.205
2011-03-28nomadManual testing2672680.409


ECM factoring results:
No ECM results for M73080827


Lucas-Lehmer results:
No L-L results for M73080827


PRP results:
No PRP results for M73080827


CERT results:
No CERT results for M73080827


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
268
267
266
265
264
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00