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 #3 of the Home prime · Base 2 sequence of
146
Term #1 of the Home prime · Base 5 sequence of
165
Term #1 of the Inverse home prime · Base 8 sequence of
279
Term #1 of the Home prime · Base 12 sequence of
1807
Term #1 of the Home prime · Base 24 sequence of
627
Term #1 of the Home prime · Base 25 sequence of
165
Term #1 of the Home prime · Base 26 sequence of
1318
Term #1 of the Home prime · Base 28 sequence of
886
Term #1 of the Home prime · Base 30 sequence of
422
Term #2 of the Home prime · Base 31 sequence of
115
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
1768
Term #2 of the Inverse home prime · Base 12 sequence of
415
Term #1 of the Inverse home prime · Base 24 sequence of
1577
Term #1 of the Inverse home prime · Base 28 sequence of
1633
Term #1 of the Inverse home prime · Base 34 sequence of
295
Term #2 of the Conway climb · Base 2 sequence of
922
Term #3 of the Conway climb · Base 3 sequence of
1173
Term #1 of the Conway climb · Base 5 sequence of
165
Term #1 of the Conway climb · Base 12 sequence of
1807
Term #1 of the Conway climb · Base 24 sequence of
627
Term #1 of the Conway climb · Base 25 sequence of
165
Term #1 of the Conway climb · Base 26 sequence of
1318
Term #1 of the Conway climb · Base 28 sequence of
886
Term #1 of the Conway climb · Base 30 sequence of
422
Term #2 of the Conway climb · Base 31 sequence of
115
Term #6 of the Distinct-prime home prime, descending · Base 8 sequence of
377
Term #1 of the Second-class home prime · Base 2 sequence of
990
Term #2 of the Second-class home prime · Base 16 sequence of
1988
Term #1 of the Mid-divisor concatenation · Base 3 sequence of
1608
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '2011' --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":"2011"},"decimal":false,"detail":2}}'