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 2 sequence of
1678
Term #1 of the Home prime · Base 4 sequence of
426
Term #1 of the Home prime · Base 6 sequence of
1027
Term #1 of the Home prime · Base 10 sequence of
1774
Term #1 of the Inverse home prime · Base 5 sequence of
1154
Term #1 of the Home prime · Base 16 sequence of
781
Term #1 of the Home prime · Base 22 sequence of
2335
Term #1 of the Home prime · Base 32 sequence of
1678
Term #1 of the Home prime · Base 33 sequence of
1418
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
2010
Term #2 of the Inverse home prime · Base 22 sequence of
493
Term #1 of the Inverse home prime · Base 28 sequence of
309
Term #1 of the Conway climb · Base 2 sequence of
1678
Term #1 of the Conway climb · Base 4 sequence of
426
Term #1 of the Conway climb · Base 6 sequence of
1027
Term #1 of the Conway climb · Base 10 sequence of
1774
Term #1 of the Conway climb · Base 16 sequence of
781
Term #1 of the Conway climb · Base 22 sequence of
2335
Term #1 of the Conway climb · Base 32 sequence of
1678
Term #1 of the Conway climb · Base 33 sequence of
1418
Term #1 of the Conway climb · Base 36 sequence of
1792
Term #1 of the Distinct-prime home prime · Base 2 sequence of
1678
Term #1 of the Distinct-prime home prime · Base 10 sequence of
1774
Term #1 of the Distinct-prime home prime · Base 16 sequence of
781
Term #1 of the Second-class home prime · Base 16 sequence of
1562
Term #1 of the Mid-divisor concatenation · Base 2 sequence of
1562
Term #3 of the Mid-divisor concatenation · Base 3 sequence of
321
Term #1 of the Mid-divisor concatenation · Base 10 sequence of
1774
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
781
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '2887' --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":"2887"},"decimal":false,"detail":2}}'