C · No factor known
Value
1708398143…19<166>
term (10^188*11-10^94*9-11)/643878011642412255824331
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Is factor of
SNFS polynomial degree 6 · difficulty 189.0
Special form: 11*10^188-9*10^94-11. This number divides it, so the number field sieve can use a polynomial with small coefficients. The best one costs about as much as GNFS on a 136-digit number (this number has 166 digits). Listed best first; the files carry sieving parameters for the polynomial's difficulty.
n: 1708398143918761801789575546989441921685149073483977596102993219353589911509144795285136260997469299115660495971703823504368435786800127706488013123371472436458726719 # 11*10^188-9*10^94-11, difficulty: 189.04, scaled difficulty: 190.76 # special-q on the algebraic side, siever gnfs-lasieve4I14e, start at q = 6000000 in ranges of 8000 type: snfs size: 189 skew: 0.4642 c6: 1100 c3: -90 c0: -11 Y1: 1 Y0: -10000000000000000000000000000000 rlim: 12000000 alim: 12000000 lpbr: 28 lpba: 28 mfbr: 56 mfba: 56 rlambda: 2.6 alambda: 2.6
The block above is a GGNFS / yafu job file for the first polynomial (yafu: save it as
nfs.job and resume with -R).
The order is for a sieve of this job's size. E is the Murphy score with the conventional fixed parameters, comparable with msieve's; it favours low degrees for small jobs, so it is not always descending.Trial factoring & ECM effort 11 · TF complete · 2 ECM stages
Work the background scanners have done on this number, from its position in the scanner queue.
Trial division
up to 100G
ECM effort
P-1 B1=500000 · P+1 c=3 B1=50000
next: ECM c=15 B1=150000
Report factors
Paste anything - plain factors, a GMP-ECM run, a factor list. Every number found is checked for divisibility; the ones that divide are submitted.
From the command linefdb · curl
fdb
fdb number id:1100000001618966894 --detail 2
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"id":1100000001618966894},"decimal":false,"detail":2}}'