is 2 1840259 - 1
has 553974 decimal digits
takes 0.100 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
Actual26716.146668.6567%10000001883290500.88158.2197%17.028171.2330%2.5763%
PrimeNet2570.010463.1579%80001500000.00122.8821%0.011764.2197%1.0618%
GPU722610.166965.5738%90001400000.00131.5964%0.168266.1234%0.5496%
Difference+6+15.9797+3.0829%+991000+188189050+0.8802+6.6233%+16.8599+5.1097%+5.1097%

Known prime factors (2 factors, 101.6 bits, 0.00552159% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
18402593680519721.8111
1
-111.518e-137.866e-81.601e-7
184025910524930301405103356631772579.800285963288357918732
22 × 3 × 112 × 2278093 × 86451437
2019-01-0922780938645143777,9360.53990.6920

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1840259387372059479972096010470054886331101.612
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-04-03T12:48:55Jocelyn LaroucheManual testing1000000188329050-
skipped known factor: 3680519
--0.882--8.220%


Trial Factoring results:
No TF results for M1840259


ECM factoring results:

Old Calculation Method

Total ECM effort:19.734 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:19.734 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
20110008.8030.015%
25500000.79745.048%
302500000.04995.187%
3510000000.00299.773%


ECM Summary

B1B2factorcurvesGHz-days
500005000000392.695
50000500000030.207
50000660000021616.83


Lucas-Lehmer results:
No L-L results for M1840259


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-04T03:57:06Oliver KruseGTX-0
3680519
4B56309168E6C7__no
2017-11-06T14:34:44ATHec2-1xf
3680519
4B56309168E6C7__no
2019-01-10T23:00:13treborLaptop
3680519
1052493030140510335663177
F03321B8D1E205AEno
2019-01-14T18:59:19Chang Chia-Tcheexbpc13
3680519
1052493030140510335663177
F03321B8D1E205AEno


P-1 factor-bounds graph:
B1 = 1000000, B2 = 188329050 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2022-04-03T12:48:55+00:00