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 6 sequence of
4537
Term #1 of the Home prime · Base 30 sequence of
11401
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
6768
Term #1 of the Inverse home prime · Base 25 sequence of
1006
Term #1 of the Inverse home prime · Base 28 sequence of
2245
Term #2 of the Inverse home prime · Base 30 sequence of
2231
Term #1 of the Inverse home prime · Base 36 sequence of
4537
Term #1 of the Conway climb · Base 30 sequence of
11401
Term #2 of the Second-class home prime · Base 3 sequence of
9282
Term #3 of the Second-class home prime · Base 10 sequence of
3224
Term #1 of the Mid-divisor concatenation · Base 10 sequence of
6924
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '12577' --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":"12577"},"decimal":false,"detail":2}}'