is 2 2336407 - 1
has 703329 decimal digits
takes 0.158 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
Actual26712.717867.1642%50000005050000003.158210.9852%15.876070.7713%3.6071%
PrimeNet2580.016462.0690%100001900000.00192.9364%0.018463.1828%1.1138%
GPU722620.263064.5161%130002000000.00231.7844%0.265265.1493%0.6332%
Difference+5+12.4548+2.6481%+4987000+504800000+3.1560+9.2008%+15.6108+5.6220%+5.6220%

Known prime factors (2 factors, 99.8 bits, 0.00427318% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
233640725466836311031.246545
5 × 109
-51091.369e-101.045e-61.045e-6
23364074451469161483995712632168.59395263136120633
13 × 17 × 19 × 7219 × 3142693
2018-02-067219314269326.4690.01740.0313

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
233640711336483647452587549829000959533199.839
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-03-18T01:20:09alpertronManual testing5000001500000012-
skipped known factor: 2546683631
skipped known factor: 445146916148399571263
--0.126--5.220%
2021-04-13T01:50:26ViliamF35000000505000000-
skipped known factor: 2546683631
skipped known factor: 445146916148399571263
--3.158--10.985%


Trial Factoring results:
No TF results for M2336407


ECM factoring results:

Old Calculation Method

Total ECM effort:0.355 GHz-days
Estimated T-Level:0.200
DigitsB1CurvesCompleteFacMiss
20110004 / 1000.04096.060%
25500004 / 2800.01498.579%

New Calculation Method

Total ECM effort:0.355 GHz-days
Estimated T-Level:0.200
DigitsB1CompleteFacMiss
20110000.15485.740%
25500000.01498.587%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.266
50000500000010.089


Lucas-Lehmer results:
No L-L results for M2336407


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-12T01:03:55Oliver KruseGTX-1
2546683631
9E0A90DD48AEA9__no
2017-11-23T20:57:34ATHec2-1xf
2546683631
9E0A90DD48AEA9__no
2018-02-10T10:25:51Massimo Cappelli (ik5pwa)Max_Win10-OLDP
2546683631
445146916148399571263
7BCA3869009F0C__no
2018-02-11T05:42:18AdolfNorManual testing
2546683631
445146916148399571263
7BCA3869009F0C__no


P-1 factor-bounds graph:
B1 = 5000000, B2 = 505000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2021-04-13T01:50:26+00:00