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.
↪
Term #1 of the aliquot sequence of
216745
Term #1 of the Home prime · Base 2 sequence of
33395
Term #2 of the Home prime · Base 3 sequence of
8659
Term #3 of the Inverse home prime · Base 2 sequence of
13429
Term #1 of the Inverse home prime · Base 4 sequence of
35727
Term #1 of the Home prime · Base 12 sequence of
5898
Term #1 of the Home prime · Base 14 sequence of
16847
Term #1 of the Home prime · Base 20 sequence of
38195
Term #1 of the Home prime · Base 26 sequence of
24974
Term #1 of the Home prime · Base 27 sequence of
16546
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
23640
Term #1 of the Inverse home prime · Base 13 sequence of
21637
Term #1 of the Inverse home prime · Base 20 sequence of
45239
Term #1 of the Inverse home prime · Base 34 sequence of
1435
Term #1 of the Conway climb · Base 2 sequence of
33395
Term #3 of the Conway climb · Base 3 sequence of
4599
Term #1 of the Conway climb · Base 12 sequence of
5898
Term #1 of the Conway climb · Base 14 sequence of
16847
Term #1 of the Conway climb · Base 20 sequence of
38195
Term #1 of the Conway climb · Base 26 sequence of
24974
Term #1 of the Conway climb · Base 27 sequence of
16546
Term #1 of the Conway climb · Base 28 sequence of
9584
Term #4 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
19407
Term #1 of the Distinct-prime home prime · Base 2 sequence of
33395
Term #2 of the Distinct-prime home prime · Base 3 sequence of
8659
Term #3 of the Distinct-prime home prime, descending · Base 2 sequence of
13429
Term #1 of the Second-class home prime · Base 3 sequence of
33092
Term #4 of the Second-class home prime · Base 8 sequence of
16918
Term #2 of the Second-class home prime · Base 16 sequence of
41872
Term #1 of the Mid-divisor concatenation · Base 2 sequence of
33395
Term #2 of the Mid-divisor concatenation · Base 3 sequence of
8659
Term #1 of the Mid-divisor concatenation · Base 10 sequence of
30556
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '47639' --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":"47639"},"decimal":false,"detail":2}}'