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 #2 of the Home prime · Base 2 sequence of
77
Term #1 of the Home prime · Base 3 sequence of
68
Term #2 of the Home prime · Base 4 sequence of
77
Term #1 of the Home prime · Base 8 sequence of
123
Term #1 of the Home prime · Base 9 sequence of
142
Term #1 of the Home prime · Base 10 sequence of
18
Term #1 of the Inverse home prime · Base 10 sequence of
69
Term #1 of the Home prime · Base 20 sequence of
143
Term #2 of the Home prime · Base 30 sequence of
55
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
222
Term #1 of the Inverse home prime · Base 12 sequence of
95
Term #1 of the Inverse home prime · Base 21 sequence of
22
Term #1 of the Inverse home prime · Base 33 sequence of
14
Term #2 of the Conway climb · Base 2 sequence of
77
Term #2 of the Conway climb · Base 3 sequence of
57
Term #2 of the Conway climb · Base 4 sequence of
77
Term #1 of the Conway climb · Base 8 sequence of
123
Term #1 of the Conway climb · Base 9 sequence of
142
Term #2 of the Conway climb · Base 10 sequence of
16
Term #1 of the Conway climb · Base 20 sequence of
143
Term #1 of the Conway climb · Base 21 sequence of
121
Term #2 of the Conway climb · Base 30 sequence of
55
Term #1 of the Conway climb · Base 33 sequence of
49
Term #2 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
36
Term #3 of the Distinct-prime home prime · Base 2 sequence of
66
Term #2 of the Distinct-prime home prime · Base 3 sequence of
123
Term #1 of the Distinct-prime home prime · Base 8 sequence of
123
Term #1 of the Distinct-prime home prime, descending · Base 10 sequence of
69
Term #2 of the Second-class home prime · Base 2 sequence of
204
Term #1 of the Second-class home prime · Base 3 sequence of
136
Term #2 of the Second-class home prime · Base 8 sequence of
104
Term #1 of the Second-class home prime · Base 10 sequence of
36
Term #3 of the Mid-divisor concatenation · Base 2 sequence of
52
Term #1 of the Mid-divisor concatenation · Base 3 sequence of
136
Term #1 of the Mid-divisor concatenation · Base 8 sequence of
123
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '233' --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":"233"},"decimal":false,"detail":2}}'