is 2 1380083 - 1
has 415447 decimal digits
takes 0.053 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
Actual26721.530568.6567%500000150000000.07144.8987%21.601970.1921%1.5354%
PrimeNet2560.007062.5000%65001100000.00072.7545%0.007663.5329%1.0329%
GPU722600.111365.0000%5500650000.00051.1708%0.111865.4098%0.4098%
Difference+7+21.4192+3.6567%+494500+14935000+0.0709+3.7279%+21.4902+4.7823%+4.7823%

Known prime factors (3 factors, 150.2 bits, 0.01088245% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
138008312696763611030.242460
22 × 5 × 23
-5231.140e-103.311e-75.634e-7
1380083144039595917239531753.6775218512072
23 × 3 × 217438003
2014-10-0682174380030.00090.65591.2249
1380083888337274379754376812066.26832184197413480
23 × 5 × 7 × 114943562191
2018-07-28811494356219115.295346.70647.54

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1380083182883669984111143615750332683.919
13800831127900837875145069221943588413096.510
1380083127955742039881760668756738050647299337119.945
1380083162462380922251790756179981562376096669701847346150.187
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
unknown50000015000000-
skipped known factor: 1269676361
--0.071--4.899%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-10-06T11:20:00TJAOIManual testing253254*53.677175.87166e-50.1120.000


ECM factoring results:

Old Calculation Method

Total ECM effort:25.301 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.301 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100012.2630.000%
25500001.35725.749%
302500000.11389.315%
3510000000.00899.236%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024811.64
50000500000030.141
250000350000005013.52


Lucas-Lehmer results:
No L-L results for M1380083


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T11:57:18Oliver KruseGTX-1
1269676361
14403959591723953
0AA2D8BB9BCE93__no
2017-10-24T18:33:47kkmrkkblmbrbkold
1269676361
14403959591723953
0AA2D8BB9BCE93__no
2018-08-01T22:25:58Oliver KruseGTX-5
1269676361
14403959591723953
88833727437975437681
6D0ADE582043A4__no
2018-08-01T22:42:43ATHec2-PRPCFDC
1269676361
14403959591723953
88833727437975437681
6D0ADE582043A4__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
254
230
240
250
260
270
280
290
2100
Last modified: 2021-07-30T10:27:48+00:00