is 2 3512623 - 1
has 1057405 decimal digits
takes 0.369 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26816.968867.6471 %10000002332184402.07918.3124 %19.047870.3364 %
Target2641.013365.6250 %2000018000000.01781.9167 %1.031166.2839 %
Difference+4+15.9555+2.0221 %+980000+231418440+2.0612+6.3957%+18.0167+4.0525 %

Known prime factors (2 factors, 63.3 bits, 0.00180155% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3512623843029521929.651120
23 × 3 × 5
-882.089e-111.218e-62.479e-6
3512623132987906791133.6311893
3 × 631
2008-09-0736314.593e-105.668e-69.843e-6

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-10-12JossManual testing35126235126236
skipped known factor: 843029521
skipped known factor: 13298790679
---5.301%
2022-04-25JossManual testing1000000145208700
skipped known factor: 843029521
skipped known factor: 13298790679
--1.41210.830%
2022-09-09JossManual testing1000000233218440
skipped known factor: 843029521
skipped known factor: 13298790679
--2.17711.482%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-07Will EdgingtonManual testing??
33.631
11
2022-02-08JossManual testing267268


ECM factoring results:
Total ECM effort:0.443 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.443


Lucas-Lehmer results:
No L-L results for M3512623


PRP results:
dateuseridcompidcofactorsres64
2017-11-08Oliver KruseGTX-1
843029521
13298790679
71D1A2D8B5F138BA
2017-12-17kkmrkkblmbrbkc4.xlarge
843029521
13298790679
71D1A2D8B5F138BA


CERT results:
No CERT results for M3512623


P-1 factor-bounds graph:
B1 = 1000000, B2 = 233218440 (P-1 stage 2)
B1 = 1000000, B2 = 145208700 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 351262, B2 = 3512623 (P-1 stage 2)
B1 = 351262 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
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270
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Last modified: 2024-03-13T02:15:48+00:00