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
533
Term #1 of the Home prime · Base 5 sequence of
255
Term #1 of the Home prime · Base 25 sequence of
255
Term #1 of the Home prime · Base 28 sequence of
898
Term #1 of the Home prime · Base 30 sequence of
98
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
1456
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
1870
Term #1 of the Inverse home prime · Base 30 sequence of
469
Term #2 of the Inverse home prime · Base 34 sequence of
57
Term #2 of the Conway climb · Base 2 sequence of
1142
Term #1 of the Conway climb · Base 5 sequence of
255
Term #1 of the Conway climb · Base 25 sequence of
255
Term #1 of the Conway climb · Base 28 sequence of
898
Term #1 of the Conway climb · Base 30 sequence of
896
Term #1 of the Conway climb · Base 31 sequence of
18
Term #1 of the Second-class home prime · Base 2 sequence of
1746
Term #4 of the Mid-divisor concatenation · Base 2 sequence of
268
Term #2 of the Mid-divisor concatenation · Base 3 sequence of
1071
Term #1 of the Mid-divisor concatenation · Base 8 sequence of
1023
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '2017' --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":"2017"},"decimal":false,"detail":2}}'