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
109899
Term #1 of the Home prime · Base 2 sequence of
8010
Term #1 of the Home prime · Base 3 sequence of
18982
Term #1 of the Home prime · Base 11 sequence of
8469
Term #1 of the Home prime · Base 21 sequence of
8675
Term #1 of the Home prime · Base 25 sequence of
963
Term #1 of the Home prime · Base 27 sequence of
18982
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
44384
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
42198
Term #1 of the Inverse home prime · Base 15 sequence of
6514
Term #1 of the Inverse home prime · Base 26 sequence of
5637
Term #3 of the Conway climb · Base 2 sequence of
10640
Term #2 of the Conway climb · Base 3 sequence of
4765
Term #1 of the Conway climb · Base 11 sequence of
25407
Term #1 of the Conway climb · Base 12 sequence of
1968
Term #1 of the Conway climb · Base 25 sequence of
2889
Term #1 of the Conway climb · Base 27 sequence of
18982
Term #1 of the Distinct-prime home prime · Base 2 sequence of
15486
Term #2 of the Distinct-prime home prime · Base 3 sequence of
12369
Term #1 of the Second-class home prime · Base 2 sequence of
16020
Term #1 of the Second-class home prime · Base 3 sequence of
37964
Term #4 of the Second-class home prime · Base 8 sequence of
6120
Term #3 of the Mid-divisor concatenation · Base 2 sequence of
20648
Term #1 of the Mid-divisor concatenation · Base 3 sequence of
16346
Term #1 of the Mid-divisor concatenation · Base 10 sequence of
41136
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
41230
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '48857' --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":"48857"},"decimal":false,"detail":2}}'