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 5 digits
↪
Term #1 of the Home prime · Base 6 sequence of 4017 · 6 terms
Term #1 of the Inverse home prime · Base 2 sequence of 11043 · 11 terms
Term #1 of the Inverse home prime · Base 4 sequence of 11043 · 7 terms
Term #1 of the Inverse home prime · Base 8 sequence of 20041 · 9 terms
Term #1 of the Home prime · Base 15 sequence of 10703 · 6 terms
Term #1 of the Home prime · Base 17 sequence of 5725 · 19 terms
Term #1 of the Home prime · Base 20 sequence of 3135 · 19 terms
Term #1 of the Home prime · Base 21 sequence of 15434 · 19 terms
Term #1 of the Home prime · Base 22 sequence of 9886 · 20 terms
Term #1 of the Home prime · Base 23 sequence of 1482 · 4 terms
Term #1 of the Home prime · Base 30 sequence of 4031 · 4 terms
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of 23874 · 2 terms
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of 20920 · 2 terms
Term #1 of the Inverse home prime · Base 24 sequence of 7651 · 7 terms
Term #1 of the Inverse home prime · Base 26 sequence of 5045 · 7 terms
Term #1 of the Inverse home prime · Base 28 sequence of 2811 · 6 terms
Term #1 of the Conway climb · Base 6 sequence of 4017 · 4 terms
Term #1 of the Conway climb · Base 10 sequence of 15296 · 5 terms
Term #1 of the Conway climb · Base 15 sequence of 10703 · 6 terms
Term #1 of the Conway climb · Base 20 sequence of 3135 · 11 terms
Term #1 of the Conway climb · Base 21 sequence of 15434 · 7 terms
Term #1 of the Conway climb · Base 22 sequence of 9886 · 6 terms
Term #4 of the Conway climb · Base 23 sequence of 209 · 17 terms
Term #1 of the Conway climb · Base 30 sequence of 4031 · 4 terms
Term #3 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of 14233 · 5 terms
Term #1 of the Mid-divisor concatenation · Base 2 sequence of 19956 · 14 terms
Term #1 of the Mid-divisor concatenation · Base 8 sequence of 6477 · 3 terms
Term #1 of the Mid-divisor concatenation · Base 10 sequence of 6214 · 15 terms
Term #1 of the Mid-divisor concatenation · Base 16 sequence of 9978 · 6 terms
Is factor of
From the command linefdb · curl
fdb
fdb number '26239' --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":"26239"},"decimal":false,"detail":2}}'