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
634
Term #1 of the Home prime · Base 4 sequence of
1341
Term #1 of the Home prime · Base 11 sequence of
2654
Term #1 of the Inverse home prime · Base 9 sequence of
886
Term #1 of the Home prime · Base 12 sequence of
606
Term #1 of the Home prime · Base 34 sequence of
1563
Term #1 of the Home prime · Base 36 sequence of
303
Term #1 of the Inverse home prime · Base 17 sequence of
1859
Term #1 of the Inverse home prime · Base 22 sequence of
1267
Term #2 of the Conway climb · Base 2 sequence of
2093
Term #1 of the Conway climb · Base 11 sequence of
2654
Term #1 of the Conway climb · Base 12 sequence of
606
Term #2 of the Conway climb · Base 28 sequence of
187
Term #1 of the Conway climb · Base 34 sequence of
1563
Term #1 of the Conway climb · Base 36 sequence of
261
Term #2 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
1224
Term #2 of the Second-class home prime · Base 2 sequence of
2070
Term #2 of the Second-class home prime · Base 3 sequence of
2730
Term #3 of the Second-class home prime · Base 8 sequence of
2672
Term #2 of the Mid-divisor concatenation · Base 2 sequence of
2006
Term #2 of the Mid-divisor concatenation · Base 3 sequence of
1463
Term #2 of the Mid-divisor concatenation · Base 10 sequence of
2414
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
2235
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '3989' --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":"3989"},"decimal":false,"detail":2}}'