is 2 1706591 - 1
has 513736 decimal digits
takes 0.080 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
Actual26717.411368.6567%30000002730000001.20869.5075%18.619871.6367%2.9800%
PrimeNet2570.011263.1579%80001300000.00102.7333%0.012264.1649%1.0070%
GPU722610.180065.5738%70001000000.00081.3024%0.180866.0221%0.4484%
Difference+6+17.2313+3.0829%+2993000+272900000+1.2077+8.2051%+18.4390+5.6145%+5.6145%

Known prime factors (2 factors, 117.7 bits, 0.00689663% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1706591367051407843531445.06110753936
24 × 397 × 1693
-39716934.647e-63.191e-55.514e-5
170659173399586788509258221592272.6362150473862469369
3 × 2663 × 269179354421
2019-05-112663269179354421576.031,000.81,869.2

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
170659126941421665855688106472141864787812736117.697
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:29:53alpertronManual testing5000001500000012-
skipped known factor: 36705140784353
--0.088--5.026%
2021-07-17T07:15:39Dylan Delgadolaptop-ryzen737003000000273000000-
skipped known factor: 36705140784353
--1.209--9.508%


Trial Factoring results:
No TF results for M1706591


ECM factoring results:

Old Calculation Method

Total ECM effort:15.996 GHz-days
Estimated T-Level:24.804
DigitsB1CurvesCompleteFacMiss
2011000269 / 1002.6906.697%
2550000269 / 2800.96138.196%

New Calculation Method

Total ECM effort:15.996 GHz-days
Estimated T-Level:24.804
DigitsB1CompleteFacMiss
20110008.6770.017%
25500000.78445.646%
302500000.04895.285%
3510000000.00299.779%


ECM Summary

B1B2factorcurvesGHz-days
50000500000026715.88
50000500000020.119


Lucas-Lehmer results:
No L-L results for M1706591


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T15:15:13alpertronManual testing
36705140784353
8BF8FAC873A925__no
2017-10-18T20:25:16Oliver KruseThreadripper
36705140784353
8BF8FAC873A925__no
2019-05-12T05:06:39vnatinSRV1
36705140784353
7339958678850925822159
5039CACAE8EBEBE3no
2019-05-13T04:50:39kkmrkkblmbrbkc5.large
36705140784353
7339958678850925822159
5039CACAE8EBEBE3no


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)
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TF factor-bounds graph:
267
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2100
Last modified: 2021-07-17T07:15:39+00:00