is 2 3698531 - 1
has 1113369 decimal digits
takes 0.388 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
Actual26816.115867.6471%10000001475859001.36857.8511%17.484470.1871%2.5401%
PrimeNet2600.041563.3333%160003200000.00503.0834%0.046564.4639%1.1306%
GPU722640.962465.6250%220004500000.00692.1055%0.969366.3488%0.7238%
Difference+4+15.1535+2.0221%+978000+147135900+1.3616+5.7456%+16.5151+3.8384%+3.8384%

Known prime factors (1 factor, 22.8 bits, 0.00061696% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
36985317397063722.8191
1
-111.511e-131.523e-73.099e-7

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-11-04T12:41:34Jocelyn LaroucheManual testing40000073970626-
skipped known factor: 7397063
--0.119--4.244%
2022-04-05T14:54:03Jocelyn LaroucheManual testing1000000147585900-
skipped known factor: 7397063
--1.369--7.851%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2022-02-11T23:31:30Jocelyn LaroucheManual testing267268--8.082--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.447 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.447 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.447


Lucas-Lehmer results:
No L-L results for M3698531


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T19:21:30kkmrkkblmbrbkManual testing
7397063
97E31B1D9DEF89__no
2017-11-30T08:21:17Oliver KruseThreadripper
7397063
97E31B1D9DEF89__no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 147585900 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 400000, B2 = 7397062 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-04-05T14:54:03+00:00