factordbrpc · fdb
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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 #5 of the aliquot sequence of 252 · 10 terms
Term #1 of the Inverse home prime · Base 6 sequence of 366 · 38 terms
Term #1 of the Home prime · Base 13 sequence of 247 · 4 terms
Term #1 of the Home prime · Base 17 sequence of 1351 · 5 terms
Term #1 of the Home prime · Base 27 sequence of 87 · 5 terms
Term #1 of the Inverse home prime · Base 33 sequence of 335 · 11 terms
Term #1 of the Conway climb · Base 13 sequence of 247 · 17 terms
Term #1 of the Conway climb · Base 17 sequence of 1351 · 15 terms
Term #1 of the Conway climb · Base 27 sequence of 87 · 11 terms
Term #1 of the Mid-divisor concatenation · Base 2 sequence of 1360 · 3 terms
Term #1 of the Mid-divisor concatenation · Base 3 sequence of 783 · 15 terms
Term #1 of the Mid-divisor concatenation · Base 8 sequence of 1360 · 3 terms
Is factor of
From the command linefdb · curl
fdb
fdb number '2216' --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":"2216"},"decimal":false,"detail":2}}'