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.
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Term #1 of the Home prime · Base 3 sequence of
741
Term #1 of the Home prime · Base 4 sequence of
854
Term #1 of the Home prime · Base 6 sequence of
1991
Term #1 of the Home prime · Base 10 sequence of
350
Term #2 of the Inverse home prime · Base 2 sequence of
1349
Term #1 of the Home prime · Base 12 sequence of
1853
Term #1 of the Home prime · Base 22 sequence of
685
Term #1 of the Home prime · Base 27 sequence of
741
Term #1 of the Home prime · Base 30 sequence of
1514
Term #1 of the Home prime · Base 32 sequence of
1018
Term #1 of the Home prime · Base 33 sequence of
758
Term #1 of the Home prime · Base 34 sequence of
98
Term #1 of the Home prime · Base 35 sequence of
214
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
1536
Term #3 of the Inverse home prime · Base 20 sequence of
1313
Term #2 of the Inverse home prime · Base 32 sequence of
1349
Term #1 of the Inverse home prime · Base 35 sequence of
146
Term #1 of the Conway climb · Base 3 sequence of
741
Term #1 of the Conway climb · Base 4 sequence of
854
Term #1 of the Conway climb · Base 6 sequence of
1991
Term #1 of the Conway climb · Base 10 sequence of
1114
Term #1 of the Conway climb · Base 12 sequence of
1853
Term #1 of the Conway climb · Base 22 sequence of
685
Term #1 of the Conway climb · Base 27 sequence of
741
Term #1 of the Conway climb · Base 30 sequence of
1514
Term #1 of the Conway climb · Base 32 sequence of
1018
Term #1 of the Conway climb · Base 33 sequence of
758
Term #1 of the Conway climb · Base 34 sequence of
896
Term #1 of the Conway climb · Base 35 sequence of
18
Term #1 of the Distinct-prime home prime · Base 3 sequence of
741
Term #1 of the Distinct-prime home prime · Base 10 sequence of
1114
Term #2 of the Distinct-prime home prime, descending · Base 2 sequence of
1349
Term #1 of the Second-class home prime · Base 3 sequence of
1482
Term #1 of the Second-class home prime · Base 10 sequence of
700
Term #2 of the Mid-divisor concatenation · Base 2 sequence of
1324
Term #3 of the Mid-divisor concatenation · Base 3 sequence of
332
Term #2 of the Mid-divisor concatenation · Base 8 sequence of
1324
Term #2 of the Mid-divisor concatenation · Base 10 sequence of
154
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '2557' --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":"2557"},"decimal":false,"detail":2}}'