is 2 1833347 - 1
has 551893 decimal digits
takes 0.099 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
Actual26716.207568.6567%500000150000000.10155.0697%16.308970.2457%1.5890%
PrimeNet2570.010563.1579%80001500000.00122.8801%0.011764.2190%1.0611%
GPU722610.167665.5738%90001400000.00131.5952%0.168866.1229%0.5492%
Difference+6+16.0399+3.0829%+491000+14860000+0.1002+3.4745%+16.1401+4.1228%+4.1228%

Known prime factors (4 factors, 202.4 bits, 0.01104243% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
183334714666777823.8064
22
-446.101e-133.146e-76.404e-7
1833347122907582891133.5173352
23 × 419
2008-07-1584191.077e-92.391e-63.358e-6
1833347155422816637814491753.7874238772492
22 × 3 × 79 × 4471279
2014-10-137944712790.00080.01920.0358
183334731253860606952815351322635372891.336852371662509956253544
23 × 11 × 13723 × 705825374876581
2020-11-2613723705825374876581380,345,8053,024,9915,649,841

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
18333471802658109856645531857.323
18333472279551792338714892198732477.593
18333471910264271890945553811807612787.304
1833347280174200868918667568992821827729734111.110
18333474583934039112615922800257480241024935115.142
18333473841336463181558863111551277871520819338124.853
18333474857563046338240904585293691114619423972511344145.123
183334756340025287452634357630648716606630507530396145148.659
183334771244793964083645919830780047085004531273277367080
1
51168.929
183334759703133276121825495710556541566414334270548568621
1657
54178.640
183334787565254196215823937850118934104582973034959352363
58348019489
61202.446
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:39:48alpertronManual testing5000001500000012-
skipped known factor: 14666777
skipped known factor: 12290758289
skipped known factor: 15542281663781449
--0.101--5.070%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:47:00J FeitsmaManual testing??33.517114.52867e-100.2139.68633e-10
2014-10-13T11:11:00TJAOIManual testing253254*53.787170.0000.2110.000


ECM factoring results:

Old Calculation Method

Total ECM effort:20.297 GHz-days
Estimated T-Level:24.732
DigitsB1CurvesCompleteFacMiss
2011000265 / 1002.6506.972%
2550000265 / 2800.94638.747%

New Calculation Method

Total ECM effort:20.297 GHz-days
Estimated T-Level:24.732
DigitsB1CompleteFacMiss
20110009.0480.012%
25500000.81944.109%
302500000.05195.063%
3510000000.00299.767%


ECM Summary

B1B2factorcurvesGHz-days
500005000000302.072
50000500000030.207
500005931484141.039
50000660000021816.98


Lucas-Lehmer results:
No L-L results for M1833347


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T02:25:14alpertronManual testing
14666777
12290758289
15542281663781449
B4FEFC1F15C4F9__no
2017-10-19T20:13:06Oliver KruseGTX-3
14666777
12290758289
15542281663781449
B4FEFC1F15C4F9__no
2020-11-26T17:10:37mrhx
14666777
12290758289
15542281663781449
3125386060695281535132263537
29C349256393FFFCno


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
1013
1014
1015
TF factor-bounds graph:
267
254
2
220
230
240
250
260
270
280
290
2100
Last modified: 2021-07-14T09:01:36+00:00