is 2 1732273 - 1
has 521467 decimal digits
takes 0.094 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
Actual26717.153168.6567%500000150000000.10155.0352%17.254670.2349%1.5782%
PrimeNet2570.011163.1579%80001400000.00122.7971%0.012364.1884%1.0305%
GPU722610.177365.5738%70001100000.00101.3457%0.178366.0370%0.4633%
Difference+6+16.9758+3.0829%+493000+14890000+0.1005+3.6894%+17.0763+4.1979%+4.1979%

Known prime factors (2 factors, 91.9 bits, 0.00530685% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
173227310393639823.3093
3
-136.455e-138.723e-81.601e-7
17322734535934299891449046392168.620130924349103503
29 × 31 × 4903 × 29702899
2020-05-0449032970289936.3730.12770.2378

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
173227347144863640789460575071913212891.929
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:33:15alpertronManual testing5000001500000012-
skipped known factor: 10393639
--0.101--5.035%


Trial Factoring results:
No TF results for M1732273


ECM factoring results:

Old Calculation Method

Total ECM effort:17.713 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:17.713 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
20110008.3230.024%
25500000.75247.133%
302500000.04695.474%
3510000000.00299.788%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025717.64
50000500000010.069


Lucas-Lehmer results:
No L-L results for M1732273


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T15:16:17alpertronManual testing
10393639
C8A913B129C58C__no
2017-10-19T08:43:21Oliver KruseThreadripper
10393639
C8A913B129C58C__no
2020-05-07T13:22:16mnd9mnd
10393639
453593429989144904639
A04CA0F82459703Cno
2020-05-08T10:10:09Sébastien Broucke130302
10393639
453593429989144904639
A04CA0F82459703Cno


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
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2020-05-25T09:38:33+00:00