is 2 1704041 - 1
has 512968 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
Actual26717.437368.6567%30000002730000001.20869.5062%18.645971.6363%2.9795%
PrimeNet2570.011363.1579%80001300000.00102.7325%0.012364.1646%1.0067%
GPU722610.180365.5738%70001000000.00081.3020%0.181166.0220%0.4482%
Difference+6+17.2571+3.0829%+2993000+272900000+1.2077+8.2042%+18.4648+5.6143%+5.6143%

Known prime factors (3 factors, 143.6 bits, 0.00842439% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
17040411676060646791237.28649179
3 × 132 × 97
-1691691.767e-81.153e-52.347e-5
17040413752298282011238.449110100
22 × 3 × 52 × 367
2008-07-15253673.935e-82.978e-63.472e-6
17040412604892223500855947832167.82076432791919351
7 × 10918970274193
2019-05-0771091897027419332.13540,59675,822

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1704041628907948549468642124792375.735
17040414365957344939085858038568296965732105.106
17040419774332615063470720806999187538332106.269
17040411638237424474387283321800656902444760589705744143.555
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:29:38alpertronManual testing5000001500000012-
skipped known factor: 167606064679
skipped known factor: 375229828201
--0.088--5.025%
2021-04-07T07:18:37Dylan Delgadolaptop-i78750100000069000000-
skipped known factor: 167606064679
skipped known factor: 375229828201
--0.321--7.046%
2021-07-21T18:18:29Dylan Delgadolaptop-ryzen737003000000273000000-
skipped known factor: 167606064679
skipped known factor: 375229828201
--1.209--9.506%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:45:00J FeitsmaManual testing??38.449121.78613e-80.1743.88217e-8


ECM factoring results:

Old Calculation Method

Total ECM effort:15.280 GHz-days
Estimated T-Level:24.589
DigitsB1CurvesCompleteFacMiss
2011000257 / 1002.5707.555%
2550000257 / 2800.91839.872%

New Calculation Method

Total ECM effort:15.280 GHz-days
Estimated T-Level:24.589
DigitsB1CompleteFacMiss
20110008.2900.025%
25500000.74947.271%
302500000.04695.491%
3510000000.00299.789%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025415.10
50000500000030.178


Lucas-Lehmer results:
No L-L results for M1704041


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T15:15:09alpertronManual testing
167606064679
375229828201
37B5E4BFAAA9F4__no
2017-10-18T19:14:40Oliver KruseThreadripper
167606064679
375229828201
37B5E4BFAAA9F4__no
2019-05-08T19:15:01artorollofourth
167606064679
375229828201
260489222350085594783
0D578E676D5593B4no
2019-05-09T16:40:54kkmrkkblmbrbkc5.large
167606064679
375229828201
260489222350085594783
0D578E676D5593B4no


P-1 factor-bounds graph:
B1 = 3000000, B2 = 273000000 (P-1 stage 2)
B1 = 1000000, B2 = 69000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 500000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-07-21T18:18:29+00:00