is 2 7681889 - 1
has 2312480 decimal digits
takes 1.758 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.868065.6716%----3.868065.6716%0.0000%
PrimeNet2630.207863.4921%340009000000.02693.5435%0.234764.7857%1.2937%
GPU722673.868065.6716%5000011000000.03562.4468%3.903666.5116%0.8399%
Difference----50000-1100000-0.0356-2.4468%-0.0356-0.8399%-0.8399%

Known prime factors (2 factors, 103.1 bits, 0.00134254% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7681889143036773191133.736931
72 × 19
-49491.790e-101.626e-53.309e-5
76818897771080664746608068812169.39750580532110960
24 × 32 × 5 × 73 × 4931 × 195161
2021-07-26493119516124.6370.00510.0066

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
76818891111550302484555007160199883203932103.132
P-1 results:
Exponent "7681889" not found


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-07-26T15:21:21ATHec2-P_150000050000027P-12169.3970.240


Trial Factoring results:
Exponent "7681889" not found


ECM factoring results:
Exponent "7681889" not found


Lucas-Lehmer results:
Exponent "7681889" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2018-04-20T17:29:09Oliver KruseGTX-1
14303677319
B8C5C8236B5BA1__no
2019-08-19T20:09:37Malottpm10
14303677319
B8C5C8236B5BA1CCno
2021-07-26T19:16:45ATHec2-PRPCF
14303677319
777108066474660806881
B8C5C8236B5BA1CCno


P-1 factor-bounds graph:
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2021-07-26T19:16:45+00:00