is 2 12963287 - 1
has 3902339 decimal digits
takes 5.295 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-
PRP89D0B6E66B53D3D4PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.292264.1791%40000032134830010.59379.6793%12.885967.6463%3.4672%
PrimeNet2640.274662.5000%6000017000000.08854.3354%0.363064.1258%1.6258%
GPU722684.598064.7059%9000024000000.12783.1675%4.725865.8238%1.1179%
Difference-1-2.3058-0.5268%+310000+318948300+10.4658+6.5117%+8.1600+1.8225%+2.3492%

Known prime factors (2 factors, 181.3 bits, 0.00139878% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1296328729504330505529031651.390113799573
35 × 173 × 2707
-24327074.494e-50.00020.0003
12963287130435536278405710858245725180565217909740129.93950309592111323968549892371117204
22 × 7 × 11 × 227 × 3637 × 12953 × 332207 × 374953 × 122623849
2022-05-243749531226238491.254e+104.16707.3905

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1296328738484131720240040993985140534461347279074084626292
68591
55181.328
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-05-22T01:38:32nordisweet16_30.8b14400000400000-
skipped known factor: 2950433050552903
--0.237--2.433%
2022-05-24T15:28:49nordisweet16_30.8b1440000032134830040129.93910.5910.5921.199.679%


Trial Factoring results:
No TF results for M12963287


ECM factoring results:
No ECM results for M12963287


Lucas-Lehmer results:
No L-L results for M12963287


PRP results:
dateuseridcompidcofactorsres64PRP
2022-05-31T16:15:59XZTM900Tiny1
2950433050552903
1304355362784057108582457251805652179097
89D0B6E66B53D3D4no


P-1 factor-bounds graph:
B1 = 400000, B2 = 321348300 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
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101
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TF factor-bounds graph:
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2130
Last modified: 2022-05-31T16:15:59+00:00