is 2 1794913 - 1
has 540323 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
Actual26716.554568.6567%500000150000000.10155.0568%16.656070.2417%1.5850%
PrimeNet2570.010763.1579%80001400000.00122.8159%0.011964.1953%1.0375%
GPU722610.171165.5738%80001300000.00121.4942%0.172366.0882%0.5144%
Difference+6+16.3834+3.0829%+492000+14870000+0.1003+3.5625%+16.4837+4.1535%+4.1535%

Known prime factors (3 factors, 135.0 bits, 0.00752161% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
179491351980680491032.2751448
23 × 181
-81814.187e-101.371e-61.445e-6
17949132423958209991237.81967523
67523
2008-07-151675231.648e-80.00030.0005
1794913347211595709458516072064.9129672100979531
17 × 677 × 840394559
2017-12-146778403945593.12343.60186.7270

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
179491312599899723460251609512270.094
17949131804829501899641799474420047433097.188
1794913841626398023670628725198849539331102.731
17949134374831288761799040876197740961793699825741135.006
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:35:05alpertronManual testing5000001500000012-
skipped known factor: 5198068049
skipped known factor: 242395820999
--0.101--5.057%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:46:00J FeitsmaManual testing??37.819126.27719e-90.2091.34593e-8


ECM factoring results:

Old Calculation Method

Total ECM effort:18.264 GHz-days
Estimated T-Level:24.732
DigitsB1CurvesCompleteFacMiss
2011000265 / 1002.6506.972%
2550000265 / 2800.94638.747%

New Calculation Method

Total ECM effort:18.264 GHz-days
Estimated T-Level:24.732
DigitsB1CompleteFacMiss
201100010.1920.004%
25500000.94338.943%
302500000.05994.225%
3510000000.00399.722%


ECM Summary

B1B2factorcurvesGHz-days
50000500000026318.13
50000500000020.138


Lucas-Lehmer results:
No L-L results for M1794913


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T17:19:07Oliver KruseGTX-3
5198068049
242395820999
7F15D10868AB36__no
2017-11-05T07:52:21kkmrkkblmbrbkc4.xlarge
5198068049
242395820999
7F15D10868AB36__no
2017-12-16T03:40:19Oliver KruseThreadripper
5198068049
242395820999
34721159570945851607
8CA916C5B30E8C__no
2017-12-16T10:48:26kkmrkkblmbrbkc4.xlarge
5198068049
242395820999
34721159570945851607
8CA916C5B30E8C__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
2
230
240
250
260
270
280
290
2100
Last modified: 2021-01-01T10:30:09+00:00