is 2 1996013 - 1
has 600860 decimal digits
takes 0.131 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
Actual26714.886668.6567%----14.886668.6567%0.0000%
PrimeNet2580.019263.7931%80001400000.00142.4779%0.020764.6903%0.8972%
GPU722620.307866.1290%80001100000.00131.2361%0.309166.5477%0.4187%
Difference+5+14.5788+2.5277%-8000-110000-0.0013-1.2361%+14.5775+2.1090%+2.1090%

Known prime factors (2 factors, 141.9 bits, 0.00711101% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
199601317607643449493611650.645441070360
23 × 5 × 11026759
-8110267590.00010.05730.1070
199601330302650496978101110987885592891.292759079487382549640483
11 × 19 × 3631959269772964787
2021-03-23193631959269772964787390,625,2131.887e+103.524e+10

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1996013533558265525410747635158826116519730116079943141.937
P-1 results:
No P-1 results for M1996013


Trial Factoring results:
No TF results for M1996013


ECM factoring results:

Old Calculation Method

Total ECM effort:12.539 GHz-days
Estimated T-Level:2.350
DigitsB1CurvesCompleteFacMiss
201100047 / 1000.47062.353%
255000047 / 2800.16884.522%
302500003 / 6400.00599.532%

New Calculation Method

Total ECM effort:12.539 GHz-days
Estimated T-Level:2.350
DigitsB1CompleteFacMiss
20110002.16911.427%
25500000.23279.297%
302500000.01898.202%
3510000000.00199.884%


ECM Summary

B1B2factorcurvesGHz-days
500005000000131.099
50000500000070.592
500006750000141.351
50000704187770.690
500003891478530.949
30000033902095537.858


Lucas-Lehmer results:
No L-L results for M1996013


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T17:22:51Oliver KruseGTX-1
1760764344949361
F4A4AD4D95B7D1__no
2017-11-13T01:42:54kkmrkkblmbrbkc4.xlarge
1760764344949361
F4A4AD4D95B7D1__no
2021-03-26T02:44:32LLangleyHome_PC_2600X
1760764344949361
3030265049697810111098788559
02ABF70D71452DB4no


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
TF factor-bounds graph:
267
250
260
270
280
290
2100
Last modified: 2022-07-03T16:47:12+00:00