is 2 1802683 - 1
has 542662 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
Actual26716.483268.6567%500000150000000.10155.0594%16.584670.2425%1.5858%
PrimeNet2570.010763.1579%80001500000.00122.8710%0.011964.2156%1.0577%
GPU722610.170465.5738%90001300000.00121.5548%0.171666.1090%0.5353%
Difference+6+16.3128+3.0829%+491000+14870000+0.1002+3.5046%+16.4130+4.1335%+4.1335%

Known prime factors (2 factors, 107.8 bits, 0.00598126% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
180268315430966491030.523428
22 × 107
-41078.670e-117.561e-78.305e-7
18026831860453722479530035195112477.30051602353893599985
33 × 5 × 7 × 22093 × 2471627461
2020-07-0222093247162746123,53910.59419.784

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
180268328708599047777387684044263021863933107.823
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:35:58alpertronManual testing5000001500000012-
skipped known factor: 1543096649
--0.101--5.059%


Trial Factoring results:
No TF results for M1802683


ECM factoring results:

Old Calculation Method

Total ECM effort:17.790 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:17.790 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
20110008.3230.024%
25500000.75247.133%
302500000.04695.474%
3510000000.00299.788%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025717.72
50000500000010.069


Lucas-Lehmer results:
No L-L results for M1802683


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T19:01:29Oliver KruseGTX-2
1543096649
A3AFA9132CF9A6__no
2017-11-05T12:27:34ATHec2-1xf
1543096649
A3AFA9132CF9A6__no
2020-07-03T14:40:31pew10980xe_1
1543096649
186045372247953003519511
CB2C80FA07952A2Fno
2020-07-03T15:06:44ATHec2-PRPCFDC
1543096649
186045372247953003519511
CB2C80FA07952A2Fno


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
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2021-01-08T11:39:56+00:00