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 Home prime · Base 4 sequence of
57
Term #1 of the Home prime · Base 6 sequence of
155
Term #1 of the Home prime · Base 8 sequence of
57
Term #2 of the Home prime · Base 10 sequence of
4
Term #1 of the Inverse home prime · Base 11 sequence of
38
Term #2 of the Home prime · Base 18 sequence of
119
Term #1 of the Home prime · Base 36 sequence of
155
Term #1 of the Inverse home prime · Base 12 sequence of
119
Term #1 of the Inverse home prime · Base 16 sequence of
39
Term #1 of the Inverse home prime · Base 19 sequence of
22
Term #1 of the Conway climb · Base 4 sequence of
57
Term #1 of the Conway climb · Base 6 sequence of
155
Term #1 of the Conway climb · Base 8 sequence of
57
Term #2 of the Conway climb · Base 10 sequence of
4
Term #2 of the Conway climb · Base 18 sequence of
119
Term #1 of the Conway climb · Base 19 sequence of
121
Term #1 of the Conway climb · Base 36 sequence of
155
Term #1 of the Distinct-prime home prime · Base 8 sequence of
57
Term #1 of the Distinct-prime home prime · Base 10 sequence of
22
Term #2 of the Distinct-prime home prime, descending · Base 16 sequence of
35
Term #1 of the Second-class home prime · Base 8 sequence of
114
Term #1 of the Second-class home prime · Base 10 sequence of
44
Term #1 of the Mid-divisor concatenation · Base 2 sequence of
114
Term #1 of the Mid-divisor concatenation · Base 8 sequence of
57
Term #2 of the Mid-divisor concatenation · Base 10 sequence of
4
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '211' --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":"211"},"decimal":false,"detail":2}}'