is 2 76003721 - 1
has 22879400 decimal digits
takes 210.127 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
Actual27450.337963.5135 %----50.337963.5135 %
Target27450.337963.5135 %5000009000000021.55224.1898 %71.890165.0422 %
Difference----500000-90000000-21.5522-4.1898 %-21.5522-1.5287 %

Known prime factors (1 factor, 74.9 bits, 0.00009855% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
76003721353483571169233933175212374.904232543595575560
23 × 3 × 5 × 19 × 71261 × 1431257
2014-11-0471261143125772.5660.58270.5839

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-11-04Kevin JagetPokey2374.9045.8670.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212531.58000e-5
2003-10-08markrv4_computers212620.004
2010-07-20ANONYMOUSv4_computers212640.026
2010-09-02riccardo ubertiNeoHpCrunch2642650.049
2010-09-03arnaudSPR202652660.098
2010-09-07Per Jessenlouiswu52662670.197
2010-09-12Per Jessenlouiswu52672680.393
2010-09-17ANONYMOUS2682690.787
2010-09-19TeraTismphenom2692701.573
2012-05-28DRHManual testing27027322.02
2014-10-22srow7Manual testing27327425.17


ECM factoring results:
No ECM results for M76003721


Lucas-Lehmer results:
No L-L results for M76003721


PRP results:
No PRP results for M76003721


CERT results:
No CERT results for M76003721


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
274
273
270
269
268
267
266
265
264
262
253
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