is 2 1384613 - 1
has 416811 decimal digits
takes 0.053 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L2E66D52E209E5154double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26721.460168.6567%500000150000000.07144.9007%21.531570.1927%1.5360%
PrimeNet2560.006962.5000%65001100000.00072.7562%0.007663.5336%1.0336%
GPU722600.110965.0000%5500700000.00051.2007%0.111465.4202%0.4202%
Difference+7+21.3492+3.6567%+494500+14930000+0.0709+3.7000%+21.4201+4.7725%+4.7725%

Known prime factors (1 factor, 72.2 bits, 0.00521660% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
138461355372321012266151639032272.2301999559480239827
33 × 11 × 991 × 6793666501
2008-12-0499167936665011,376.620.49238.272

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-21T00:00:00Team Prime Ribv4_computers15000228750---0.001--0.815%
unknown50000015000000---0.071--4.901%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-03T00:00:00ANONYMOUSv4_computers21257--0.014--
2003-07-06T00:00:00ANONYMOUSv4_computers21258--0.028--


ECM factoring results:

Old Calculation Method

Total ECM effort:25.175 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000298 / 1002.9805.004%
2550000298 / 2801.06434.432%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.175 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100012.1670.001%
25500001.34825.975%
302500000.11289.363%
3510000000.00899.239%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000024811.65
250000350000005013.53


Lucas-Lehmer results:
No L-L results for M1384613


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T12:39:18Oliver KruseGTX-2
5537232101226615163903
38AB90DE9F3865__no
2017-10-25T02:59:06kkmrkkblmbrbkold
5537232101226615163903
38AB90DE9F3865__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 15000, B2 = 228750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
258
257
250
260
270
280
290
2100
Last modified: 2021-10-28T13:36:08+00:00