is 2 1709711 - 1
has 514675 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
Actual26717.379568.6567%30000002730000001.20869.5091%18.588171.6372%2.9805%
PrimeNet2570.011263.1579%80001400000.00102.7901%0.012364.1858%1.0279%
GPU722610.179765.5738%70001000000.00081.3029%0.180566.0223%0.4485%
Difference+6+17.1998+3.0829%+2993000+272900000+1.2077+8.2062%+18.4076+5.6149%+5.6149%

Known prime factors (2 factors, 114.0 bits, 0.00666943% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1709711129370507726010231753.5223783402801
32 × 420378089
-94203780890.00101.56292.9191
170971116368516630849479511960.506478692499225
52 × 107 × 178950467
2016-02-121071789504670.09620.66531.2426

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
17097112117603307254639528816667284435387335114.028
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:30:07alpertronManual testing5000001500000012---0.088--5.027%
2021-07-17T22:45:56Dylan Delgadolaptop-ryzen737003000000273000000-
skipped known factor: 1636851663084947951
--1.209--9.509%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-12T12:10:51TJAOIManual testing260261*60.506190.0060.1640.013


ECM factoring results:

Old Calculation Method

Total ECM effort:15.999 GHz-days
Estimated T-Level:24.804
DigitsB1CurvesCompleteFacMiss
2011000269 / 1002.6906.697%
2550000269 / 2800.96138.196%

New Calculation Method

Total ECM effort:15.999 GHz-days
Estimated T-Level:24.804
DigitsB1CompleteFacMiss
201100010.3460.003%
25500000.95738.393%
302500000.06094.141%
3510000000.00399.718%


ECM Summary

B1B2factorcurvesGHz-days
50000500000026916.00


Lucas-Lehmer results:
No L-L results for M1709711


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T15:33:51alpertronManual testing
12937050772601023
1636851663084947951
83110530D30C6E__no
2017-10-18T21:44:58Oliver KruseThreadripper
12937050772601023
1636851663084947951
83110530D30C6E__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
261
250
260
270
280
290
2100
Last modified: 2021-07-17T22:45:56+00:00