is 2 1714057 - 1
has 515983 decimal digits
takes 0.081 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L5E4C385E7DA39F7Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26717.335468.6567 %500000150000000.08805.0287 %17.423570.2329 %
Target2610.179265.5738 %70005500000.00251.3427 %0.181766.0360 %
Difference+6+17.1562+3.0829 %+493000+14450000+0.0855+3.6861%+17.2418+4.1969 %

Known prime factors (2 factors, 150.6 bits, 0.00878541% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1714057184792464632903567986792373.9685390499400921427
13 × 414653800070879
2020-03-23134146538000708791,116.01,541,6572,879,386
17140571160077984192386686949372476.61933840122708649324
22 × 3 × 1657 × 2503 × 679934887
2014-01-1825036799348878,928.52.52814.7215

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-01-29JossManual testing5000050000--0.0041.408%
2011-02-09Carsten Kossendeymother9000015075006--0.0114.722%
2016-03-16alpertronManual testing5000001500000012---8.802%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-02-02ANONYMOUSv4_computers212580.022
2010-04-24Architects Cubeda3_bu22602610.090
2010-10-16GrunwalderGIMPManual testing212630.931


ECM factoring results:
Total ECM effort:38.122 GHz-days
Estimated T-Level:25.715
DigitsB1CompleteFacMiss
201100014.7460.000%
25500001.67718.700%
302500000.14386.677%
3510000000.01099.014%


ECM Summary

B1B2factorcurvesGHz-days
10.059
50000500000023415.78
500005000000221.509
250000400000004920.77


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15Greg Hewgillv4_computers5E4C385E7DA39F7B0.081


PRP results:
dateuseridcompidcofactorsres64
2017-09-30alpertronManual testing
116007798419238668694937
4ECA4210D4460679
2017-10-18Oliver KruseThreadripper-PC
116007798419238668694937
4ECA4210D4460679
2020-03-23M Millercruncher
116007798419238668694937
18479246463290356798679
CB5165FB181EA12A
2020-03-23ATHec2-PRPCFDC
116007798419238668694937
18479246463290356798679
CB5165FB181EA12A


CERT results:
No CERT results for M1714057


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 90000, B2 = 1507500 (P-1 stage 2)
B1 = 90000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
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TF factor-bounds graph:
263
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258
this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.71 ~= 69-bit
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Last modified: 2024-02-29T14:28:04+00:00