is 2 3511687 - 1
has 1057124 decimal digits
takes 0.369 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
Actual26816.973367.6471%10000001452087001.34887.7908%18.322170.1676%2.5206%
PrimeNet2600.043763.3333%150003000000.00462.9622%0.048464.4195%1.0861%
GPU722641.013665.6250%200003600000.00591.9166%1.019466.2838%0.6588%
Difference+4+15.9597+2.0221%+980000+144848700+1.3430+5.8742%+17.3027+3.8838%+3.8838%

Known prime factors (1 factor, 53.5 bits, 0.00152461% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3511687130913999569670891753.5391863975912
23 × 3 × 67 × 1159189
-6711591890.00070.00960.0180

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-10-11T01:34:49Jocelyn LaroucheManual testing35116835116876-
skipped known factor: 13091399956967089
--0.080--3.522%
2022-04-24T23:35:31Jocelyn LaroucheManual testing1000000145208700-
skipped known factor: 13091399956967089
--1.349--7.791%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2022-01-31T09:35:50Jocelyn LaroucheManual testing267268--8.512--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.443 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.443 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.443


Lucas-Lehmer results:
No L-L results for M3511687


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-08T02:12:14Oliver KruseGTX-3
13091399956967089
B458A7E09DCEB0__no
2017-12-17T01:08:04LookAShome
13091399956967089
B458A7E09DCEB0__no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 145208700 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 351168, B2 = 3511687 (P-1 stage 2)
B1 = 351168 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-04-24T23:35:31+00:00