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 #4 of the Home prime · Base 2 sequence of
289
Term #1 of the Home prime · Base 3 sequence of
3214
Term #3 of the Home prime · Base 4 sequence of
219
Term #1 of the Home prime · Base 8 sequence of
3839
Term #3 of the Inverse home prime · Base 2 sequence of
1923
Term #2 of the Inverse home prime · Base 3 sequence of
1132
Term #1 of the Inverse home prime · Base 4 sequence of
4849
Term #1 of the Inverse home prime · Base 9 sequence of
2555
Term #1 of the Home prime · Base 12 sequence of
2391
Term #1 of the Home prime · Base 14 sequence of
404
Term #1 of the Home prime · Base 28 sequence of
2023
Term #1 of the Home prime · Base 34 sequence of
775
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
2700
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
4578
Term #1 of the Inverse home prime · Base 16 sequence of
4849
Term #1 of the Inverse home prime · Base 22 sequence of
5149
Term #1 of the Inverse home prime · Base 30 sequence of
2189
Term #3 of the Conway climb · Base 2 sequence of
561
Term #1 of the Conway climb · Base 3 sequence of
3214
Term #1 of the Conway climb · Base 4 sequence of
1885
Term #1 of the Conway climb · Base 8 sequence of
3839
Term #1 of the Conway climb · Base 12 sequence of
2391
Term #1 of the Conway climb · Base 14 sequence of
404
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
3986
Term #3 of the Distinct-prime home prime · Base 2 sequence of
561
Term #1 of the Distinct-prime home prime · Base 3 sequence of
3214
Term #1 of the Distinct-prime home prime · Base 8 sequence of
3839
Term #10 of the Distinct-prime home prime, descending · Base 2 sequence of
985
Term #2 of the Distinct-prime home prime, descending · Base 3 sequence of
2190
Term #1 of the Distinct-prime home prime, descending · Base 16 sequence of
4849
Term #1 of the Second-class home prime · Base 2 sequence of
4188
Term #2 of the Second-class home prime · Base 3 sequence of
1624
Term #2 of the Mid-divisor concatenation · Base 2 sequence of
3683
Term #3 of the Mid-divisor concatenation · Base 3 sequence of
1014
Term #2 of the Mid-divisor concatenation · Base 8 sequence of
3717
Term #2 of the Mid-divisor concatenation · Base 10 sequence of
3713
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '5981' --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":"5981"},"decimal":false,"detail":2}}'