factordbrpc · fdb
Sign in

Enter a value, an expression, or a term with a variable like 10^n+1 to list a range. Switch to Database id to look a number up by its stored id. Reading never stores anything; use Create to add a number to the database. See the expression syntax & functions reference.

FF · Fully factored
below threshold 4 digits
↪
Term #3 of the Home prime · Base 2 sequence of 231 · 4 terms
Term #2 of the Home prime · Base 4 sequence of 261 · 4 terms
Term #1 of the Home prime · Base 8 sequence of 602 · 47 terms
Term #1 of the Inverse home prime · Base 8 sequence of 345 · 22 terms
Term #3 of the Inverse home prime · Base 10 sequence of 85 · 20 terms
Term #1 of the Home prime · Base 23 sequence of 914 · 19 terms
Term #1 of the Home prime · Base 26 sequence of 326 · 3 terms
Term #1 of the Home prime · Base 27 sequence of 12 · 4 terms
Term #2 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of 882 · 4 terms
Term #1 of the Inverse home prime · Base 17 sequence of 178 · 13 terms
Term #1 of the Inverse home prime · Base 32 sequence of 517 · 24 terms
Term #1 of the Conway climb · Base 2 sequence of 602 · 2 terms
Term #2 of the Conway climb · Base 4 sequence of 783 · 4 terms
Term #1 of the Conway climb · Base 8 sequence of 602 · 6 terms
Term #2 of the Conway climb · Base 22 sequence of 119 · 5 terms
Term #1 of the Conway climb · Base 23 sequence of 914 · 15 terms
Term #1 of the Conway climb · Base 26 sequence of 326 · 3 terms
Term #1 of the Conway climb · Base 27 sequence of 12 · 4 terms
Term #1 of the Distinct-prime home prime · Base 2 sequence of 602 · 2 terms
Term #1 of the Distinct-prime home prime · Base 8 sequence of 602 · 4 terms
Term #1 of the Distinct-prime home prime, descending · Base 8 sequence of 345 · 4 terms
Term #1 of the Distinct-prime home prime, descending · Base 10 sequence of 755 · 2 terms
Term #1 of the Second-class home prime · Base 2 sequence of 1204 · 2 terms
Term #1 of the Second-class home prime · Base 8 sequence of 1204 · 2 terms
Term #1 of the Mid-divisor concatenation · Base 2 sequence of 982 · 2 terms
Term #3 of the Mid-divisor concatenation · Base 8 sequence of 50 · 16 terms
Term #1 of the Mid-divisor concatenation · Base 10 sequence of 225 · 3 terms
Is factor of
From the command linefdb · curl
fdb
fdb number '1515' --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":{"expr":"1515"},"decimal":false,"detail":2}}'