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
376181
Term #2 of the Home prime · Base 3 sequence of
2601
Term #1 of the Inverse home prime · Base 4 sequence of
21079
Term #2 of the Inverse home prime · Base 6 sequence of
29737
Term #1 of the Inverse home prime · Base 8 sequence of
18951
Term #1 of the Home prime · Base 12 sequence of
18134
Term #1 of the Home prime · Base 24 sequence of
27201
Term #1 of the Home prime · Base 27 sequence of
22346
Term #1 of the Home prime · Base 29 sequence of
316
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
18900
Term #1 of the Inverse home prime · Base 12 sequence of
29477
Term #1 of the Inverse home prime · Base 14 sequence of
42919
Term #1 of the Inverse home prime · Base 16 sequence of
21079
Term #1 of the Inverse home prime · Base 22 sequence of
11485
Term #1 of the Inverse home prime · Base 32 sequence of
17369
Term #2 of the Conway climb · Base 3 sequence of
7989
Term #3 of the Conway climb · Base 12 sequence of
3879
Term #1 of the Conway climb · Base 24 sequence of
27201
Term #1 of the Conway climb · Base 27 sequence of
22346
Term #1 of the Conway climb · Base 29 sequence of
316
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
28876
Term #2 of the Distinct-prime home prime · Base 3 sequence of
7989
Term #1 of the Distinct-prime home prime, descending · Base 8 sequence of
18951
Term #1 of the Distinct-prime home prime, descending · Base 16 sequence of
21079
Term #1 of the Second-class home prime · Base 3 sequence of
44692
Term #2 of the Mid-divisor concatenation · Base 3 sequence of
7989
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '50539' --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":"50539"},"decimal":false,"detail":2}}'