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 6 digits
↪
Term #1 of the aliquot sequence of 3541393 · 2 terms
Term #1 of the Home prime · Base 4 sequence of 52213 · 2 terms
Term #1 of the Home prime · Base 6 sequence of 33042 · 2 terms
Term #1 of the Inverse home prime · Base 3 sequence of 36184 · 2 terms
Term #1 of the Inverse home prime · Base 11 sequence of 15135 · 2 terms
Term #2 of the Home prime · Base 14 sequence of 10423 · 3 terms
Term #1 of the Home prime · Base 15 sequence of 41794 · 2 terms
Term #1 of the Home prime · Base 33 sequence of 6981 · 2 terms
Term #1 of the Conway climb · Base 2 sequence of 67131 · 2 terms
Term #1 of the Conway climb · Base 4 sequence of 52213 · 2 terms
Term #1 of the Conway climb · Base 6 sequence of 33042 · 2 terms
Term #1 of the Conway climb · Base 14 sequence of 4851 · 2 terms
Term #1 of the Conway climb · Base 15 sequence of 41408 · 2 terms
Term #1 of the Conway climb · Base 33 sequence of 6981 · 2 terms
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of 46890 · 2 terms
Term #2 of the Second-class home prime · Base 3 sequence of 42444 · 3 terms
Term #4 of the Second-class home prime · Base 16 sequence of 69230 · 5 terms
Term #1 of the Mid-divisor concatenation · Base 2 sequence of 69258 · 2 terms
Term #1 of the Mid-divisor concatenation · Base 3 sequence of 72882 · 2 terms
Term #2 of the Mid-divisor concatenation · Base 8 sequence of 18630 · 3 terms
Term #1 of the Mid-divisor concatenation · Base 10 sequence of 17934 · 2 terms
Is factor of

Primality

Verified directlyproven prime

Checked deterministically (below 300 digits).

From the command linefdb · curl
fdb
fdb number '122147' --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":"122147"},"decimal":false,"detail":2}}'