is 2 4189307 - 1
has 1261108 decimal digits
takes 0.522 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L161148FE46F6DE53double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2677.092867.1642%----7.092867.1642%0.0000%
PrimeNet2610.073363.9344%170003400000.00632.8333%0.079664.9563%1.0219%
GPU722651.741566.1538%220004500000.00821.8739%1.749766.7881%0.6343%
Difference+2+5.3513+1.0103%-22000-450000-0.0082-1.8739%+5.3431+0.3761%+0.3761%

Known prime factors (2 factors, 135.8 bits, 0.00324180% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4189307121073869141861675192063.3931445034574237
607 × 22643 × 105137
2009-08-04226431051370.55510.00490.0083
418930763020615328875939702232272.416752160385105173
32 × 11 × 7597579647527
2018-12-06117597579647527295.1574,859139,816

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
41893077630149733567927502818627613713777578673741135.809
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-08-04T12:44:00Carsten Kossendeyleela2063.393-1.045-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-24T00:00:00ANONYMOUSv4_computers21261--0.073--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.182 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.182 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.182


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-10-21T00:00:00ANONYMOUSv4_computers161148FE46F6DE530.522
2000-11-15T00:00:00ANONYMOUSv4_computers161148FE46F6DE530.522


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:31:32kkmrkkblmbrbkManual testing
12107386914186167519
EAA13ECA79F1EB__no
2018-01-18T10:39:44Oliver KruseGTX-3
12107386914186167519
EAA13ECA79F1EB__no
2018-12-07T16:11:52GunnarLu
12107386914186167519
6302061532887593970223
715D4193481BEFF2no
2018-12-08T09:09:39kkmrkkblmbrbkc5d.large
12107386914186167519
6302061532887593970223
715D4193481BEFF2no


P-1 factor-bounds graph:
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
267
261
250
260
270
280
290
2100
Last modified: 2018-12-08T09:09:39+00:00