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
148169
Term #1 of the Home prime · Base 2 sequence of
4554
Term #1 of the Home prime · Base 3 sequence of
7923
Term #1 of the Home prime · Base 4 sequence of
20401
Term #1 of the Inverse home prime · Base 2 sequence of
7755
Term #1 of the Inverse home prime · Base 4 sequence of
11661
Term #2 of the Inverse home prime · Base 7 sequence of
2991
Term #2 of the Home prime · Base 20 sequence of
255
Term #1 of the Home prime · Base 32 sequence of
20401
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
19480
Term #1 of the Inverse home prime · Base 19 sequence of
4355
Term #1 of the Conway climb · Base 2 sequence of
6072
Term #1 of the Conway climb · Base 3 sequence of
7923
Term #1 of the Conway climb · Base 4 sequence of
20401
Term #1 of the Conway climb · Base 10 sequence of
7024
Term #2 of the Conway climb · Base 20 sequence of
255
Term #1 of the Conway climb · Base 22 sequence of
15296
Term #1 of the Conway climb · Base 32 sequence of
20401
Term #3 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
11091
Term #1 of the Distinct-prime home prime · Base 2 sequence of
8855
Term #1 of the Distinct-prime home prime · Base 3 sequence of
7923
Term #1 of the Distinct-prime home prime, descending · Base 2 sequence of
7755
Term #1 of the Second-class home prime · Base 2 sequence of
9108
Term #1 of the Second-class home prime · Base 3 sequence of
15846
Term #2 of the Mid-divisor concatenation · Base 2 sequence of
13983
Term #1 of the Mid-divisor concatenation · Base 3 sequence of
13900
Term #1 of the Mid-divisor concatenation · Base 10 sequence of
10536
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
11305
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '24439' --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":"24439"},"decimal":false,"detail":2}}'