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 3 sequence of
12
Term #2 of the Home prime · Base 5 sequence of
33
Term #1 of the Home prime · Base 9 sequence of
75
Term #1 of the Inverse home prime · Base 3 sequence of
194
Term #1 of the Inverse home prime · Base 5 sequence of
99
Term #1 of the Inverse home prime · Base 10 sequence of
87
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
282
Term #1 of the Inverse home prime · Base 22 sequence of
91
Term #1 of the Inverse home prime · Base 26 sequence of
77
Term #2 of the Conway climb · Base 5 sequence of
33
Term #1 of the Conway climb · Base 11 sequence of
112
Term #2 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
72
Term #1 of the Distinct-prime home prime, descending · Base 3 sequence of
194
Term #1 of the Distinct-prime home prime, descending · Base 10 sequence of
87
Term #1 of the Second-class home prime · Base 3 sequence of
150
Term #1 of the Mid-divisor concatenation · Base 2 sequence of
148
Term #2 of the Mid-divisor concatenation · Base 3 sequence of
112
Term #1 of the Mid-divisor concatenation · Base 8 sequence of
148
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '293' --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":"293"},"decimal":false,"detail":2}}'