FF · Fully factored
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.
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Term #1 of the aliquot sequence of
1000
Term #1 of the Home prime · Base 7 sequence of
933
Term #1 of the Inverse home prime · Base 6 sequence of
446
Term #1 of the Inverse home prime · Base 7 sequence of
573
Term #1 of the Home prime · Base 13 sequence of
1099
Term #2 of the Home prime · Base 19 sequence of
44
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
882
Term #1 of the Aliquot variants · Bi-unitary · σ**(n) − n sequence of
1000
Term #1 of the Aliquot variants · Infinitary · σ∞(n) − n sequence of
1000
Term #1 of the Inverse home prime · Base 15 sequence of
445
Term #1 of the Inverse home prime · Base 31 sequence of
301
Term #1 of the Conway climb · Base 7 sequence of
933
Term #1 of the Conway climb · Base 13 sequence of
1099
Term #4 of the Conway climb · Base 19 sequence of
21
Is factor of
From the command linefdb · curl
fdb
fdb number '1340' --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":"1340"},"decimal":false,"detail":2}}'