is 2 1996303 - 1
has 600948 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
Actual26714.884568.6567%----14.884568.6567%0.0000%
PrimeNet2580.019263.7931%80001400000.00142.4780%0.020764.6903%0.8972%
GPU722620.307766.1290%80001100000.00131.2362%0.309066.5477%0.4187%
Difference+5+14.5767+2.5277%-8000-110000-0.0013-1.2362%+14.5754+2.1090%+2.1090%

Known prime factors (3 factors, 165.2 bits, 0.00827420% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
19963032332320720971237.76358416
24 × 3 × 1217
-1612171.508e-87.764e-61.182e-5
1996303386950204787482331755.1039691670172
22 × 3 × 23 × 3613 × 9719
2015-01-05361397190.00270.00040.0007
199630358629741550869048493372272.3121468457983353956
22 × 7 × 173 × 303149872699
2021-03-22173303149872699484.861,574.62,941.0

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
199630390249198060942993353673546012892.866
1996303136743361084207665112114610664968934110.075
199630322686790499745940175571585979921997152139127.415
19963035291287157486279779211960979453801634214815874953750165.178
P-1 results:
No P-1 results for M1996303


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-01-05T12:34:00TJAOIManual testing255256*55.103170.0000.2810.001


ECM factoring results:

Old Calculation Method

Total ECM effort:3.464 GHz-days
Estimated T-Level:1.950
DigitsB1CurvesCompleteFacMiss
201100039 / 1000.39067.573%
255000039 / 2800.13986.976%

New Calculation Method

Total ECM effort:3.464 GHz-days
Estimated T-Level:1.950
DigitsB1CompleteFacMiss
20110001.28927.549%
25500000.11788.948%
302500000.00799.280%


ECM Summary

B1B2factorcurvesGHz-days
500005000000201.691
50000500000050.423
50000671795970.674
50000675000070.676


Lucas-Lehmer results:
No L-L results for M1996303


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T17:35:27Oliver KruseGTX-2
233232072097
38695020478748233
10A6B32E33D106__no
2017-11-13T06:03:32Chang Chia-Tcheexbpc13
233232072097
38695020478748233
10A6B32E33D106__no
2021-03-22T09:15:17MarkSlaptop64
233232072097
38695020478748233
5862974155086904849337
08A8DB5C8D8D4F2Dno
2021-03-22T22:23:45MarkSlaptop64
233232072097
38695020478748233
5862974155086904849337
08A8DB5C8D8D4F2Dno


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
256
230
240
250
260
270
280
290
2100
Last modified: 2022-05-14T19:58:00+00:00