P · Proven prime
Enter a value, an expression, or a term with a variable like 10^n+1 to list a range.
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See the expression syntax & functions reference.
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Term #1 of the aliquot sequence of
83525
Term #2 of the Home prime · Base 2 sequence of
7026
Term #1 of the Home prime · Base 6 sequence of
6795
Term #1 of the Home prime · Base 10 sequence of
16894
Term #1 of the Inverse home prime · Base 2 sequence of
15993
Term #1 of the Inverse home prime · Base 4 sequence of
15993
Term #1 of the Inverse home prime · Base 5 sequence of
11378
Term #1 of the Home prime · Base 20 sequence of
1551
Term #1 of the Home prime · Base 22 sequence of
14302
Term #1 of the Home prime · Base 23 sequence of
4522
Term #1 of the Home prime · Base 30 sequence of
16957
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
26274
Term #1 of the Inverse home prime · Base 12 sequence of
15563
Term #1 of the Inverse home prime · Base 20 sequence of
3337
Term #2 of the Conway climb · Base 2 sequence of
7026
Term #2 of the Conway climb · Base 6 sequence of
8458
Term #1 of the Conway climb · Base 10 sequence of
16894
Term #1 of the Conway climb · Base 20 sequence of
1551
Term #1 of the Conway climb · Base 22 sequence of
14302
Term #1 of the Conway climb · Base 23 sequence of
4522
Term #1 of the Conway climb · Base 30 sequence of
16957
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
14272
Term #2 of the Distinct-prime home prime · Base 2 sequence of
7026
Term #1 of the Distinct-prime home prime · Base 10 sequence of
16894
Term #2 of the Second-class home prime · Base 16 sequence of
23768
Term #4 of the Mid-divisor concatenation · Base 2 sequence of
4180
Term #1 of the Mid-divisor concatenation · Base 3 sequence of
8812
Term #1 of the Mid-divisor concatenation · Base 10 sequence of
16894
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '28447' --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":"28447"},"decimal":false,"detail":2}}'