P · Proven prime
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.
↪
Term #1 of the Inverse home prime · Base 4 sequence of
7453
Term #1 of the Inverse home prime · Base 8 sequence of
7453
Term #1 of the Home prime · Base 18 sequence of
9626
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
9060
Term #1 of the Inverse home prime · Base 20 sequence of
13991
Term #1 of the Inverse home prime · Base 25 sequence of
1318
Term #1 of the Inverse home prime · Base 29 sequence of
1615
Term #1 of the Conway climb · Base 3 sequence of
7024
Term #2 of the Conway climb · Base 9 sequence of
2831
Term #1 of the Conway climb · Base 18 sequence of
9626
Term #1 of the Distinct-prime home prime, descending · Base 8 sequence of
7453
Term #2 of the Mid-divisor concatenation · Base 3 sequence of
7059
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
5952
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '16477' --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":"16477"},"decimal":false,"detail":2}}'