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.
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Term #1 of the Home prime · Base 2 sequence of
276
Term #3 of the Home prime · Base 4 sequence of
26
Term #2 of the Home prime · Base 5 sequence of
253
Term #1 of the Inverse home prime · Base 2 sequence of
645
Term #1 of the Inverse home prime · Base 4 sequence of
1047
Term #1 of the Inverse home prime · Base 11 sequence of
254
Term #1 of the Home prime · Base 16 sequence of
245
Term #1 of the Home prime · Base 20 sequence of
597
Term #1 of the Home prime · Base 21 sequence of
117
Term #1 of the Home prime · Base 22 sequence of
862
Term #2 of the Home prime · Base 25 sequence of
253
Term #1 of the Home prime · Base 26 sequence of
94
Term #1 of the Inverse home prime · Base 32 sequence of
989
Term #1 of the Inverse home prime · Base 34 sequence of
205
Term #1 of the Conway climb · Base 2 sequence of
252
Term #2 of the Conway climb · Base 5 sequence of
253
Term #1 of the Conway climb · Base 20 sequence of
597
Term #1 of the Conway climb · Base 21 sequence of
351
Term #1 of the Conway climb · Base 22 sequence of
862
Term #2 of the Conway climb · Base 25 sequence of
253
Term #1 of the Conway climb · Base 26 sequence of
94
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
796
Term #1 of the Distinct-prime home prime · Base 2 sequence of
506
Term #4 of the Distinct-prime home prime, descending · Base 2 sequence of
627
Term #1 of the Second-class home prime · Base 2 sequence of
552
Term #1 of the Second-class home prime · Base 16 sequence of
490
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '1399' --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":"1399"},"decimal":false,"detail":2}}'