is 2 1798999 - 1
has 541553 decimal digits
takes 0.098 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
Actual26716.516968.6567%500000150000000.10155.0582%16.618470.2421%1.5854%
PrimeNet2570.010763.1579%80001500000.00122.8698%0.011964.2152%1.0573%
GPU722610.170865.5738%90001300000.00121.5542%0.172066.1088%0.5350%
Difference+6+16.3462+3.0829%+491000+14870000+0.1002+3.5040%+16.4464+4.1333%+4.1333%

Known prime factors (3 factors, 137.3 bits, 0.00763272% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1798999233869871927.80165
5 × 13
-5131.008e-114.276e-78.005e-7
17989992606713571031237.92372449
13 × 5573
2008-07-151355731.711e-82.485e-54.464e-5
179899935492965461970305221832271.588986464291029909
3 × 829 × 396648287507
2020-09-18829396648287507487.231,699.93,175.0

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1798999609631766590735437132065.725
17989998300735253998450688060008483933099.389
179899992519994745817067984615535611584933109.511
179899921637639236124915479160265298077266668547942137.313
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:35:33alpertronManual testing5000001500000012-
skipped known factor: 233869871
skipped known factor: 260671357103
--0.101--5.058%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:46:00J FeitsmaManual testing??37.923126.93703e-90.2091.48701e-8


ECM factoring results:

Old Calculation Method

Total ECM effort:18.268 GHz-days
Estimated T-Level:24.732
DigitsB1CurvesCompleteFacMiss
2011000265 / 1002.6506.972%
2550000265 / 2800.94638.747%

New Calculation Method

Total ECM effort:18.268 GHz-days
Estimated T-Level:24.732
DigitsB1CompleteFacMiss
20110008.5480.019%
25500000.77346.181%
302500000.04895.354%
3510000000.00299.782%


ECM Summary

B1B2factorcurvesGHz-days
50000500000026117.99
50000500000040.276


Lucas-Lehmer results:
No L-L results for M1798999


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T18:11:57Oliver KruseGTX-2
233869871
260671357103
9BA742858F2E47__no
2017-11-05T13:11:55kkmrkkblmbrbkold
233869871
260671357103
9BA742858F2E47__no
2020-09-18T08:33:29M Millercruncher
233869871
260671357103
3549296546197030522183
71146821CEBEEC65no


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
2
220
230
240
250
260
270
280
290
2100
Last modified: 2021-02-12T10:31:12+00:00