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 3 sequence of
5932
Term #1 of the Home prime · Base 6 sequence of
420
Term #1 of the Home prime · Base 9 sequence of
11714
Term #1 of the Inverse home prime · Base 7 sequence of
5422
Term #1 of the Home prime · Base 18 sequence of
4449
Term #2 of the Home prime · Base 19 sequence of
1537
Term #1 of the Home prime · Base 20 sequence of
2506
Term #1 of the Home prime · Base 21 sequence of
914
Term #1 of the Inverse home prime · Base 28 sequence of
15571
Term #1 of the Inverse home prime · Base 32 sequence of
1779
Term #2 of the Conway climb · Base 3 sequence of
3648
Term #1 of the Conway climb · Base 6 sequence of
420
Term #1 of the Conway climb · Base 9 sequence of
11714
Term #1 of the Conway climb · Base 18 sequence of
4449
Term #2 of the Conway climb · Base 19 sequence of
1537
Term #1 of the Conway climb · Base 20 sequence of
2506
Term #1 of the Conway climb · Base 21 sequence of
914
Term #2 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
12181
Term #2 of the Distinct-prime home prime · Base 3 sequence of
5574
Term #5 of the Second-class home prime · Base 3 sequence of
9250
Term #2 of the Mid-divisor concatenation · Base 2 sequence of
8968
Term #3 of the Mid-divisor concatenation · Base 3 sequence of
1626
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '18979' --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":"18979"},"decimal":false,"detail":2}}'