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 6 sequence of
3093
Term #1 of the Home prime · Base 11 sequence of
1659
Term #1 of the Inverse home prime · Base 2 sequence of
3687
Term #1 of the Inverse home prime · Base 4 sequence of
2149
Term #1 of the Home prime · Base 30 sequence of
1885
Term #1 of the Home prime · Base 36 sequence of
3093
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
2280
Term #1 of the Inverse home prime · Base 12 sequence of
4499
Term #1 of the Inverse home prime · Base 16 sequence of
2149
Term #3 of the Inverse home prime · Base 22 sequence of
505
Term #1 of the Inverse home prime · Base 26 sequence of
245
Term #2 of the Inverse home prime · Base 30 sequence of
2669
Term #1 of the Inverse home prime · Base 33 sequence of
298
Term #1 of the Conway climb · Base 6 sequence of
3093
Term #1 of the Conway climb · Base 11 sequence of
1659
Term #1 of the Conway climb · Base 30 sequence of
1885
Term #1 of the Conway climb · Base 36 sequence of
3093
Term #3 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
2282
Term #1 of the Distinct-prime home prime, descending · Base 2 sequence of
3687
Term #1 of the Distinct-prime home prime, descending · Base 16 sequence of
2149
Term #3 of the Second-class home prime · Base 8 sequence of
4686
Term #4 of the Second-class home prime · Base 16 sequence of
1032
Term #6 of the Mid-divisor concatenation · Base 2 sequence of
545
Term #5 of the Mid-divisor concatenation · Base 8 sequence of
645
Term #1 of the Mid-divisor concatenation · Base 10 sequence of
3676
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
1045
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '4919' --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":"4919"},"decimal":false,"detail":2}}'