is 2 1794557 - 1
has 540216 decimal digits
takes 0.097 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
Actual26716.557868.6567%500000150000000.10155.0566%16.659370.2416%1.5849%
PrimeNet2570.010763.1579%80001400000.00122.8158%0.011964.1953%1.0374%
GPU722610.171265.5738%80001300000.00121.4942%0.172366.0882%0.5144%
Difference+6+16.3866+3.0829%+492000+14870000+0.1003+3.5625%+16.4870+4.1535%+4.1535%

Known prime factors (2 factors, 88.1 bits, 0.00491170% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
179455796906079826.53027
33
-27275.011e-122.124e-64.322e-6
179455735269831843628142171961.613982689093844
22 × 401 × 612649061
2016-05-134016126490610.18242.62574.9040

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
17945573417861110955344391749251432788.143
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:35:00alpertronManual testing5000001500000012-
skipped known factor: 96906079
--0.101--5.057%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-05-13T15:25:49TJAOIManual testing261262*61.613190.0110.1980.023


ECM factoring results:

Old Calculation Method

Total ECM effort:18.263 GHz-days
Estimated T-Level:24.732
DigitsB1CurvesCompleteFacMiss
2011000265 / 1002.6506.972%
2550000265 / 2800.94638.747%

New Calculation Method

Total ECM effort:18.263 GHz-days
Estimated T-Level:24.732
DigitsB1CompleteFacMiss
201100010.1920.004%
25500000.94338.943%
302500000.05994.225%
3510000000.00399.722%


ECM Summary

B1B2factorcurvesGHz-days
50000500000026518.26


Lucas-Lehmer results:
No L-L results for M1794557


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T17:12:59Oliver KruseGTX-0
96906079
3526983184362814217
D7C1F148880BA5__no
2017-11-05T21:33:41bayanneiMac1
96906079
3526983184362814217
D7C1F148880BA5__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
TF factor-bounds graph:
267
262
220
230
240
250
260
270
280
290
2100
Last modified: 2021-01-01T10:30:09+00:00