factordbrpc · fdb
Sign in

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.

P · Proven prime
below threshold 5 digits
↪
Term #1 of the aliquot sequence of 173569 · 2 terms
Term #1 of the Home prime · Base 2 sequence of 6350 · 2 terms
Term #1 of the Home prime · Base 3 sequence of 3609 · 2 terms
Term #1 of the Home prime · Base 6 sequence of 2390 · 2 terms
Term #1 of the Home prime · Base 9 sequence of 3609 · 2 terms
Term #1 of the Home prime · Base 10 sequence of 568 · 2 terms
Term #1 of the Inverse home prime · Base 2 sequence of 9369 · 2 terms
Term #1 of the Inverse home prime · Base 4 sequence of 9369 · 2 terms
Term #1 of the Inverse home prime · Base 8 sequence of 9331 · 2 terms
Term #1 of the Home prime · Base 20 sequence of 12542 · 2 terms
Term #2 of the Home prime · Base 34 sequence of 265 · 3 terms
Term #1 of the Home prime · Base 36 sequence of 4063 · 2 terms
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of 14808 · 2 terms
Term #1 of the Inverse home prime · Base 18 sequence of 6185 · 2 terms
Term #1 of the Inverse home prime · Base 19 sequence of 2379 · 2 terms
Term #1 of the Conway climb · Base 2 sequence of 6604 · 2 terms
Term #1 of the Conway climb · Base 3 sequence of 10827 · 2 terms
Term #1 of the Conway climb · Base 6 sequence of 2390 · 2 terms
Term #1 of the Conway climb · Base 9 sequence of 10827 · 2 terms
Term #1 of the Conway climb · Base 10 sequence of 1084 · 2 terms
Term #1 of the Conway climb · Base 20 sequence of 12542 · 2 terms
Term #2 of the Conway climb · Base 34 sequence of 265 · 3 terms
Term #2 of the Conway climb · Base 36 sequence of 2511 · 3 terms
Term #3 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of 2916 · 4 terms
Term #1 of the Distinct-prime home prime · Base 2 sequence of 7130 · 2 terms
Term #1 of the Distinct-prime home prime, descending · Base 2 sequence of 16089 · 2 terms
Term #1 of the Distinct-prime home prime, descending · Base 8 sequence of 9331 · 2 terms
Term #1 of the Second-class home prime · Base 2 sequence of 12700 · 2 terms
Term #1 of the Second-class home prime · Base 3 sequence of 7218 · 2 terms
Term #2 of the Second-class home prime · Base 8 sequence of 11682 · 3 terms
Term #1 of the Second-class home prime · Base 10 sequence of 1136 · 2 terms
Term #2 of the Mid-divisor concatenation · Base 3 sequence of 6027 · 3 terms
Term #3 of the Mid-divisor concatenation · Base 10 sequence of 2088 · 4 terms
Is factor of

Primality

Verified directlyproven prime

Checked deterministically (below 300 digits).

From the command linefdb · curl
fdb
fdb number '22271' --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":"22271"},"decimal":false,"detail":2}}'