is 2 3604247 - 1
has 1084987 decimal digits
takes 0.379 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE983B668B90A3D38double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2678.244167.1642%1000001303648501.09615.9781%9.340269.1271%1.9630%
PrimeNet2600.042663.3333%150003000000.00462.9757%0.047364.4244%1.0911%
GPU722640.987565.6250%200004000000.00621.9809%0.993766.3059%0.6809%
Difference+3+7.2566+1.5392%+80000+129964850+1.0899+3.9972%+8.3465+2.8212%+2.8212%

Known prime factors (1 factor, 64.9 bits, 0.00180123% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3604247349237475072224362792064.9214844804963037
3 × 13 × 1583 × 78474901
2009-08-081583784749011.92930.65131.2161

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-04T06:46:00Carsten Kossendeyleela20000245000---0.005--1.114%
2022-03-05T05:37:09Jocelyn LaroucheManual testing9000090000---0.014--0.954%
2022-03-22T11:06:21Jocelyn LaroucheManual testing100000100000---0.015--1.014%
2022-05-26T12:47:54Jocelyn LaroucheManual testing100000130364850-
skipped known factor: 34923747507222436279
--1.096--5.978%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-03-13T06:30:00S485122USB-A260261--0.043--


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)
1999-08-16T00:00:00ANONYMOUSv4_computersE983B668B90A3D380.379


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-10T11:57:30Oliver KruseGTX-3
34923747507222436279
45EBB45FE11813__no
2017-12-18T16:03:56kkmrkkblmbrbkc4.xlarge
34923747507222436279
45EBB45FE11813__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 = 245000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
102
103
104
105
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
261
250
260
270
280
290
2100
Last modified: 2022-05-26T12:47:54+00:00