is 2 1841759 - 1
has 554425 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
Actual26716.133468.6567%10000001883290500.88158.2204%17.015071.2333%2.5765%
PrimeNet2570.010463.1579%80001500000.00122.8826%0.011764.2199%1.0620%
GPU722610.166865.5738%90001400000.00131.5967%0.168166.1234%0.5497%
Difference+6+15.9667+3.0829%+991000+188189050+0.8802+6.6237%+16.8469+5.1098%+5.1098%

Known prime factors (3 factors, 126.8 bits, 0.00688279% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
184175914734073823.8134
22
-446.073e-133.146e-76.404e-7
184175916944182811030.658460
22 × 5 × 23
2008-07-155238.540e-114.705e-78.005e-7
184175957884660771092649592172272.2941571450465861512
23 × 17 × 233 × 49591342649
2020-10-0123349591342649788.14212.54396.96

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1841759249656826447885131754.471
1841759852876817381515388854453008412996.106
1841759980808274000229418137000424597731102.952
184175914451300708123382263578088257053507432139126.764
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-04-03T12:49:02Jocelyn LaroucheManual testing1000000188329050-
skipped known factor: 14734073
skipped known factor: 1694418281
--0.882--8.220%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:47:00J FeitsmaManual testing??30.658107.73297e-120.2141.65314e-11


ECM factoring results:

Old Calculation Method

Total ECM effort:19.234 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:19.234 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.5730.019%
25500000.77745.996%
302500000.04895.309%
3510000000.00299.779%


ECM Summary

B1B2factorcurvesGHz-days
500005000000362.488
50000500000010.069
50000660000021416.68


Lucas-Lehmer results:
No L-L results for M1841759


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-04T04:15:19Oliver KruseGTX-0
14734073
1694418281
4948AB4F4CEFF0__no
2017-11-06T18:28:39kkmrkkblmbrbkold
14734073
1694418281
4948AB4F4CEFF0__no
2020-10-02T01:00:17firejugglerMaison
14734073
1694418281
5788466077109264959217
8780455AD1FDFE14no
2020-10-03T05:03:53arnaudSRV-130
14734073
1694418281
5788466077109264959217
8780455AD1FDFE14no


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
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2022-04-03T12:49:02+00:00