is 2 3743863 - 1
has 1127016 decimal digits
takes 0.393 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
Actual2677.936767.1642%1000001303648501.09616.0076%9.032869.1368%1.9727%
PrimeNet2600.041063.3333%160003200000.00503.0900%0.046064.4663%1.1330%
GPU722640.950765.6250%220004500000.00692.1101%0.957666.3503%0.7253%
Difference+3+6.9860+1.5392%+78000+129914850+1.0892+3.8976%+8.0752+2.7865%+2.7865%

Known prime factors (2 factors, 67.8 bits, 0.00180973% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
374386377273332331032.8471032
23 × 3 × 43
-8431.870e-101.509e-62.479e-6
3743863322047095271134.9074301
11 × 17 × 23
2008-09-0717231.180e-92.639e-65.269e-6

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
37438632488565221870988107912167.754
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-03-04T19:33:09Jocelyn LaroucheManual testing9000090000-
skipped known factor: 7727333233
skipped known factor: 32204709527
--0.014--0.961%
2022-03-22T11:08:52Jocelyn LaroucheManual testing100000100000-
skipped known factor: 7727333233
skipped known factor: 32204709527
--0.015--1.021%
2022-05-23T20:33:48Jocelyn LaroucheManual testing100000130364850-
skipped known factor: 7727333233
skipped known factor: 32204709527
--1.096--6.008%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-07T21:11:00Will EdgingtonManual testing??34.907115.69103e-100.8401.21589e-9


ECM factoring results:

Old Calculation Method

Total ECM effort:0.448 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.448 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.448


Lucas-Lehmer results:
No L-L results for M3743863


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:17:47kkmrkkblmbrbkManual testing
7727333233
32204709527
AE786EBC1028D0__no
2017-12-03T23:31:17Oliver KruseGTX-0
7727333233
32204709527
AE786EBC1028D0__no


P-1 factor-bounds graph:
B1 = 100000, B2 = 130364850 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 90000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
2
230
240
250
260
270
280
290
2100
Last modified: 2022-05-23T20:33:48+00:00