is 2 3717409 - 1
has 1119052 decimal digits
takes 0.390 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L8EA2C24B47D8A5F0double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2677.993267.1642%1000001303648501.09616.0021%9.089269.1350%1.9708%
PrimeNet2600.041363.3333%160003200000.00503.0862%0.046364.4649%1.1316%
GPU722640.957565.6250%220004500000.00692.1074%0.964466.3494%0.7244%
Difference+3+7.0357+1.5392%+78000+129914850+1.0892+3.8947%+8.1249+2.7856%+2.7856%

Known prime factors (1 factor, 71.4 bits, 0.00191941% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
371740930139998149461799511532271.352405389858224664
23 × 23 × 983 × 43271 × 51797
2009-09-054327151797186.640.00670.0134

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-06T10:52:00Carsten Kossendeyleela20000265000---0.005--1.148%
2022-03-05T05:36:28Jocelyn LaroucheManual testing9000090000-
skipped known factor: 3013999814946179951153
--0.014--0.960%
2022-03-22T11:09:15Jocelyn LaroucheManual testing100000100000-
skipped known factor: 3013999814946179951153
--0.015--1.019%
2022-05-25T14:14:02Jocelyn LaroucheManual testing100000130364850-
skipped known factor: 3013999814946179951153
--1.096--6.002%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1997-12-13T00:00:00ANONYMOUSv4_computers21260--0.041--
2009-03-05T16:15:00S485122USB-Z260261--0.041--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-01-05T00:00:00ANONYMOUSv4_computers8EA2C24B47D8A5F00.390
1999-08-16T00:00:00ANONYMOUSv4_computers8EA2C24B47D8A5F00.390


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T17:02:28kkmrkkblmbrbkManual testing
3013999814946179951153
40E8AA01AB8AD1__no
2017-12-01T16:04:31Oliver KruseGTX-0
3013999814946179951153
40E8AA01AB8AD1__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)
B1 = 20000, B2 = 265000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
103
104
105
103
104
105
106
107
108
109
TF factor-bounds graph:
267
261
260
250
260
270
280
290
2100
Last modified: 2022-05-25T14:14:02+00:00