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.
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See the expression syntax & functions reference.
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Term #1 of the Home prime · Base 7 sequence of
3515
Term #1 of the Inverse home prime · Base 2 sequence of
8105
Term #1 of the Inverse home prime · Base 5 sequence of
5871
Term #2 of the Inverse home prime · Base 7 sequence of
370
Term #1 of the Inverse home prime · Base 8 sequence of
8105
Term #1 of the Inverse home prime · Base 10 sequence of
3891
Term #1 of the Home prime · Base 12 sequence of
6139
Term #1 of the Home prime · Base 34 sequence of
2827
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
9708
Term #1 of the Conway climb · Base 7 sequence of
3515
Term #1 of the Conway climb · Base 12 sequence of
6139
Term #1 of the Conway climb · Base 16 sequence of
1557
Term #1 of the Conway climb · Base 34 sequence of
2827
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
8973
Term #1 of the Distinct-prime home prime, descending · Base 2 sequence of
8105
Term #1 of the Distinct-prime home prime, descending · Base 8 sequence of
8105
Term #1 of the Distinct-prime home prime, descending · Base 10 sequence of
3891
Term #2 of the Mid-divisor concatenation · Base 2 sequence of
4958
Term #1 of the Mid-divisor concatenation · Base 3 sequence of
4982
Term #2 of the Mid-divisor concatenation · Base 8 sequence of
1832
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
8650
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '12973' --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":"12973"},"decimal":false,"detail":2}}'