is 2 2406289 - 1
has 724366 decimal digits
takes 0.163 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
Actual26712.348467.1642%2000000600000000.50557.6173%12.853969.6654%2.5012%
PrimeNet2590.031962.7119%100001800000.00192.5197%0.033863.6514%0.9396%
GPU722630.663365.0794%100001400000.00171.2755%0.664965.5248%0.4454%
Difference+4+11.6852+2.0848%+1990000+59860000+0.5038+6.3418%+12.1889+4.1406%+4.1406%

Known prime factors (3 factors, 149.6 bits, 0.00621794% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
24062892023159665431237.55842039
35 × 173
-2432438.365e-92.380e-54.844e-5
2406289212760752701191444.2744420931
109 × 40559
2008-09-30109405591.862e-60.00020.0004
24062892550792895305620726712167.79053002629678015
35 × 5 × 67 × 651097963
2018-02-1824365109796315.2933.47496.4900

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
240628943044897325157452916286172581.832
24062895160661300647740647049077064635332105.347
2406289542708616390071605900954283281784934112.064
2406289109798618276171548456831748148210138069722600746149.622
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-09-28T16:26:13alpertronManual testing20000006000000012-
skipped known factor: 202315966543
skipped known factor: 21276075270119
--0.505--7.617%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-30T14:36:00markrManual testing??44.274148.87726e-70.3621.97542e-6


ECM factoring results:

Old Calculation Method

Total ECM effort:13.535 GHz-days
Estimated T-Level:22.714
DigitsB1CurvesCompleteFacMiss
2011000152 / 1001.52021.704%
2550000152 / 2800.54358.052%

New Calculation Method

Total ECM effort:13.535 GHz-days
Estimated T-Level:22.714
DigitsB1CompleteFacMiss
20110005.8460.289%
25500000.54158.221%
302500000.03496.646%
3510000000.00299.841%


ECM Summary

B1B2factorcurvesGHz-days
50000500000015013.36
50000500000020.178


Lucas-Lehmer results:
No L-L results for M2406289


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-13T00:45:49Oliver KruseGTX-264851DE2D057E5__no
2017-11-26T12:40:06kkmrkkblmbrbkc4.xlarge
202315966543
21276075270119
64851DE2D057E5__no
2018-02-20T14:46:02Oliver KruseGTX-7
202315966543
21276075270119
255079289530562072671
64851DE2D057E5__no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
2
230
240
250
260
270
280
290
2100
Last modified: 2019-03-16T17:51:47+00:00