is 2 1799081 - 1
has 541578 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
Actual26716.516268.6567%500000150000000.10155.0582%16.617670.2421%1.5854%
PrimeNet2570.010763.1579%80001500000.00122.8699%0.011964.2152%1.0573%
GPU722610.170765.5738%90001300000.00121.5542%0.172066.1088%0.5351%
Difference+6+16.3454+3.0829%+491000+14870000+0.1002+3.5040%+16.4457+4.1333%+4.1333%

Known prime factors (2 factors, 117.0 bits, 0.00650439% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
17990815636790923002971549.002156657508
22 × 72 × 19 × 23 × 31 × 59
-49596.468e-53.897e-67.844e-6
17990812987334749673448176792168.01783023909142319
32 × 9224878793591
2018-03-279922487879359146.35839,53673,841

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
179908116838981400930642281247301418255066336117.019
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:35:34alpertronManual testing5000001500000012-
skipped known factor: 563679092300297
--0.101--5.058%


Trial Factoring results:
No TF results for M1799081


ECM factoring results:

Old Calculation Method

Total ECM effort:17.303 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:17.303 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.0970.030%
25500000.73248.105%
302500000.04595.594%
3510000000.00299.794%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024817.10
50000500000030.207


Lucas-Lehmer results:
No L-L results for M1799081


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T18:15:45Oliver KruseGTX-0
563679092300297
5CBC59AD4879ED__no
2017-11-05T14:00:45Chang Chia-Tcheexbpc13
563679092300297
5CBC59AD4879ED__no
2018-03-29T00:41:58Oliver KruseGTX-2
563679092300297
298733474967344817679
71E05590800016__no
2018-03-30T03:04:10Squeeky_SquirrelP4_2600
563679092300297
298733474967344817679
71E05590800016__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
1013
TF factor-bounds graph:
267
240
250
260
270
280
290
2100
Last modified: 2020-12-18T11:12:54+00:00