is 2 1799311 - 1
has 541647 decimal digits
takes 0.098 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L03603325D64017BBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26716.514168.6567 %500000150000000.10155.0583 %16.615570.2421 %
Target2610.170765.5738 %90006500000.00351.5542 %0.174266.1088 %
Difference+6+16.3433+3.0829 %+491000+14350000+0.0980+3.5040%+16.4414+4.1333 %

Known prime factors (1 factor, 68.0 bits, 0.00378152% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
17993113037116410983293587032168.04184396649911641
84396649911641
2008-09-0818439664991164133.127361,703675,560

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-03-16alpertronManual testing5000001500000012---8.848%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-01-25ANONYMOUSv4_computers212580.021


ECM factoring results:
Total ECM effort:38.680 GHz-days
Estimated T-Level:25.716
DigitsB1CompleteFacMiss
201100014.7850.000%
25500001.68018.633%
302500000.14386.658%
3510000000.01099.013%


ECM Summary

B1B2factorcurvesGHz-days
10.052
50000500000025717.72
250000400000004920.91


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-21ANONYMOUSv4_computers03603325D64017BB0.098


PRP results:
dateuseridcompidcofactorsres64
2017-10-03Oliver KruseGTX-3
303711641098329358703
6674EB199B11803C
2017-11-05kkmrkkblmbrbkc4.xlarge
303711641098329358703
6674EB199B11803C


CERT results:
No CERT results for M1799311


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
1010
1011
1012
1013
1014
TF factor-bounds graph:
258
this exponent TF target: 61
TF double-checked to: 67
ECM T-Level=25.72 ~= 69-bit
250
260
270
JSON version of this page
Last modified: 2024-03-03T02:29:32+00:00