factordbrpc · fdb
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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.

P · Proven prime
below threshold 5 digits
↪
Term #1 of the aliquot sequence of 89285 · 2 terms
Term #1 of the Home prime · Base 10 sequence of 1899 · 2 terms
Term #1 of the Home prime · Base 11 sequence of 7858 · 2 terms
Term #2 of the Inverse home prime · Base 7 sequence of 4205 · 3 terms
Term #1 of the Inverse home prime · Base 11 sequence of 6038 · 2 terms
Term #1 of the Home prime · Base 12 sequence of 7201 · 2 terms
Term #1 of the Home prime · Base 18 sequence of 20255 · 2 terms
Term #1 of the Home prime · Base 24 sequence of 11126 · 2 terms
Term #2 of the Home prime · Base 25 sequence of 161 · 3 terms
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of 17568 · 2 terms
Term #1 of the Inverse home prime · Base 12 sequence of 19369 · 2 terms
Term #1 of the Conway climb · Base 10 sequence of 5697 · 2 terms
Term #1 of the Conway climb · Base 11 sequence of 7858 · 2 terms
Term #1 of the Conway climb · Base 12 sequence of 7201 · 2 terms
Term #1 of the Conway climb · Base 18 sequence of 20255 · 2 terms
Term #1 of the Conway climb · Base 24 sequence of 11126 · 2 terms
Term #1 of the Conway climb · Base 25 sequence of 264 · 2 terms
Term #2 of the Second-class home prime · Base 3 sequence of 4482 · 3 terms
Term #1 of the Second-class home prime · Base 10 sequence of 3798 · 2 terms
Term #2 of the Mid-divisor concatenation · Base 2 sequence of 13133 · 3 terms
Term #1 of the Mid-divisor concatenation · Base 3 sequence of 22168 · 2 terms
Term #1 of the Mid-divisor concatenation · Base 8 sequence of 28352 · 2 terms
Term #1 of the Mid-divisor concatenation · Base 10 sequence of 6963 · 2 terms
Term #1 of the Mid-divisor concatenation · Base 16 sequence of 3544 · 2 terms
Is factor of

Primality

Verified directlyproven prime

Checked deterministically (below 300 digits).

From the command linefdb · curl
fdb
fdb number '33211' --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":"33211"},"decimal":false,"detail":2}}'