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
894641
Term #1 of the Inverse home prime · Base 2 sequence of
24453
Term #1 of the Inverse home prime · Base 4 sequence of
24453
Term #1 of the Inverse home prime · Base 5 sequence of
29277
Term #1 of the Home prime · Base 18 sequence of
4199
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
52038
Term #1 of the Inverse home prime · Base 13 sequence of
12514
Term #1 of the Inverse home prime · Base 16 sequence of
60547
Term #1 of the Inverse home prime · Base 18 sequence of
4769
Term #1 of the Inverse home prime · Base 24 sequence of
23723
Term #1 of the Inverse home prime · Base 30 sequence of
35243
Term #1 of the Conway climb · Base 18 sequence of
4199
Term #2 of the Conway climb · Base 33 sequence of
70535
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
69601
Term #2 of the Distinct-prime home prime, descending · Base 2 sequence of
31895
Term #1 of the Distinct-prime home prime, descending · Base 16 sequence of
60547
Term #1 of the Mid-divisor concatenation · Base 2 sequence of
57369
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '81343' --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":"81343"},"decimal":false,"detail":2}}'