is 2 1819343 - 1
has 547677 decimal digits
takes 0.099 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
Actual26716.332268.6567%500000150000000.10155.0650%16.433770.2443%1.5875%
PrimeNet2570.010663.1579%80001500000.00122.8759%0.011864.2175%1.0596%
GPU722610.168865.5738%90001300000.00121.5578%0.170166.1100%0.5363%
Difference+6+16.1634+3.0829%+491000+14870000+0.1002+3.5072%+16.2636+4.1342%+4.1342%

Known prime factors (2 factors, 72.0 bits, 0.00395622% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
181934343664233825.38012
22 × 3
-442.463e-123.146e-76.404e-7
18193431064506031051531546.59729255232
26 × 3 × 17 × 8963
2014-02-186489636.705e-64.317e-57.173e-5

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
181934346480839369739240926492271.977
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:37:50alpertronManual testing5000001500000012-
skipped known factor: 43664233
skipped known factor: 106450603105153
--0.101--5.065%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-02-18T11:16:00TJAOIManual testing??46.597151.55248e-60.2113.32335e-6


ECM factoring results:

Old Calculation Method

Total ECM effort:19.151 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:19.151 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
201100010.3210.003%
25500000.95038.676%
302500000.06094.151%
3510000000.00399.717%


ECM Summary

B1B2factorcurvesGHz-days
500005000000432.968
50000660000020816.18


Lucas-Lehmer results:
No L-L results for M1819343


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T22:59:58Oliver KruseGTX-1
43664233
106450603105153
D7E235D38CF5FA__no
2017-11-05T23:29:15kkmrkkblmbrbkc4.xlarge
43664233
106450603105153
D7E235D38CF5FA__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
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2021-03-26T16:50:04+00:00