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 205659 · 2 terms
Term #1 of the Home prime · Base 6 sequence of 16738 · 2 terms
Term #1 of the Inverse home prime · Base 3 sequence of 67786 · 2 terms
Term #1 of the Home prime · Base 13 sequence of 12999 · 2 terms
Term #1 of the Home prime · Base 30 sequence of 62043 · 2 terms
Term #1 of the Home prime · Base 34 sequence of 42142 · 2 terms
Term #1 of the Home prime · Base 36 sequence of 16738 · 2 terms
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of 79902 · 2 terms
Term #1 of the Inverse home prime · Base 18 sequence of 84197 · 2 terms
Term #1 of the Inverse home prime · Base 22 sequence of 87799 · 2 terms
Term #1 of the Inverse home prime · Base 28 sequence of 47203 · 2 terms
Term #1 of the Inverse home prime · Base 30 sequence of 37279 · 2 terms
Term #1 of the Conway climb · Base 6 sequence of 16738 · 2 terms
Term #1 of the Conway climb · Base 13 sequence of 12999 · 2 terms
Term #1 of the Conway climb · Base 30 sequence of 62043 · 2 terms
Term #1 of the Conway climb · Base 34 sequence of 42142 · 2 terms
Term #1 of the Conway climb · Base 36 sequence of 16738 · 2 terms
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of 51616 · 2 terms
Term #1 of the Distinct-prime home prime, descending · Base 3 sequence of 67786 · 2 terms
Term #3 of the Second-class home prime · Base 3 sequence of 29718 · 4 terms
Term #1 of the Mid-divisor concatenation · Base 2 sequence of 60390 · 2 terms
Term #1 of the Mid-divisor concatenation · Base 8 sequence of 60390 · 2 terms
Is factor of

Primality

Verified directlyproven prime

Checked deterministically (below 300 digits).

From the command linefdb · curl
fdb
fdb number '101681' --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":"101681"},"decimal":false,"detail":2}}'