is 2 1514713 - 1
has 455975 decimal digits
takes 0.068 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26719.616968.6567%30000002730000001.14709.4020%20.763971.6036%2.9469%
PrimeNet2570.012763.1579%65001100000.00082.4094%0.013564.0456%0.8877%
GPU722610.202865.5738%6000500000.00050.9500%0.203365.9008%0.3271%
Difference+6+19.4141+3.0829%+2994000+272950000+1.1465+8.4520%+20.5606+5.7028%+5.7028%

Known prime factors (3 factors, 98.9 bits, 0.00652811% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
15147139088279723.1163
3
-137.383e-137.182e-81.318e-7
151471336353113825.11612
22 × 3
2008-07-15442.959e-122.591e-75.272e-7
151471317678632605254471650.651583563771
37 × 7 × 38119
2014-06-052187381190.00010.00030.0003

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
15147133303872334625271548.231
1514713160668345455049489357132373.767
1514713642673328784300141665112375.767
15147135840794517850450507192044245693098.882
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T19:15:44alpertronManual testing5000001500000012-
skipped known factor: 9088279
skipped known factor: 36353113
skipped known factor: 1767863260525447
--0.084--4.954%
2021-07-24T05:42:17Dylan Delgadolaptop-ryzen737003000000273000000-
skipped known factor: 9088279
skipped known factor: 36353113
skipped known factor: 1767863260525447
--1.147--9.402%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T10:03:00J FeitsmaManual testing??25.11687.66518e-150.1501.69984e-14
2014-06-05T11:24:00TJAOIManual testing??50.651164.99613e-50.1500.000


ECM factoring results:

Old Calculation Method

Total ECM effort:31.168 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:31.168 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.67418.740%
302500000.14486.623%
3510000000.01099.005%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025114.00
250000400000005017.17


Lucas-Lehmer results:
No L-L results for M1514713


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T12:16:48Oliver KruseGTX-1
9088279
36353113
1767863260525447
32621BE9263D15__no
2017-10-29T19:31:09kkmrkkblmbrbkold
9088279
36353113
1767863260525447
32621BE9263D15__no


P-1 factor-bounds graph:
B1 = 3000000, B2 = 273000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2022-05-26T10:13:36+00:00