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 aliquot sequence of
148431
Term #1 of the Home prime · Base 3 sequence of
21371
Term #1 of the Home prime · Base 9 sequence of
21371
Term #1 of the Inverse home prime · Base 3 sequence of
13132
Term #1 of the Inverse home prime · Base 4 sequence of
14089
Term #1 of the Inverse home prime · Base 7 sequence of
25225
Term #1 of the Home prime · Base 12 sequence of
16018
Term #1 of the Home prime · Base 21 sequence of
3115
Term #1 of the Home prime · Base 24 sequence of
20319
Term #1 of the Home prime · Base 28 sequence of
1246
Term #1 of the Inverse home prime · Base 16 sequence of
14089
Term #1 of the Inverse home prime · Base 26 sequence of
1095
Term #1 of the Inverse home prime · Base 27 sequence of
26197
Term #1 of the Conway climb · Base 3 sequence of
21371
Term #1 of the Conway climb · Base 9 sequence of
21371
Term #1 of the Conway climb · Base 12 sequence of
9968
Term #1 of the Conway climb · Base 21 sequence of
3115
Term #1 of the Conway climb · Base 24 sequence of
20319
Term #1 of the Conway climb · Base 28 sequence of
1246
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
32986
Term #1 of the Distinct-prime home prime · Base 3 sequence of
21371
Term #1 of the Distinct-prime home prime, descending · Base 3 sequence of
15410
Term #1 of the Distinct-prime home prime, descending · Base 16 sequence of
14089
Term #1 of the Second-class home prime · Base 3 sequence of
42742
Term #2 of the Mid-divisor concatenation · Base 3 sequence of
22755
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '49481' --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":"49481"},"decimal":false,"detail":2}}'