P · Proven prime
Enter a value, an expression, or a term with a variable like 10^n+1 to list a range.
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See the expression syntax & functions reference.
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Term #1 of the Home prime · Base 10 sequence of
478
Term #1 of the Inverse home prime · Base 2 sequence of
1251
Term #1 of the Inverse home prime · Base 4 sequence of
1251
Term #1 of the Home prime · Base 14 sequence of
913
Term #1 of the Home prime · Base 20 sequence of
1045
Term #1 of the Home prime · Base 26 sequence of
633
Term #1 of the Home prime · Base 29 sequence of
1114
Term #1 of the Home prime · Base 30 sequence of
878
Term #1 of the Home prime · Base 31 sequence of
634
Term #1 of the Home prime · Base 32 sequence of
310
Term #3 of the Home prime · Base 33 sequence of
6
Term #1 of the Aliquot variants · Augmented · σ(n) − n + 1 sequence of
1794
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
1720
Term #1 of the Inverse home prime · Base 13 sequence of
117
Term #1 of the Inverse home prime · Base 22 sequence of
1717
Term #1 of the Conway climb · Base 10 sequence of
478
Term #1 of the Conway climb · Base 14 sequence of
913
Term #1 of the Conway climb · Base 20 sequence of
1045
Term #1 of the Conway climb · Base 26 sequence of
633
Term #1 of the Conway climb · Base 29 sequence of
1114
Term #1 of the Conway climb · Base 30 sequence of
878
Term #1 of the Conway climb · Base 31 sequence of
634
Term #1 of the Conway climb · Base 32 sequence of
310
Term #3 of the Conway climb · Base 33 sequence of
6
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
756
Term #1 of the Distinct-prime home prime · Base 10 sequence of
478
Term #2 of the Second-class home prime · Base 3 sequence of
2028
Term #1 of the Second-class home prime · Base 10 sequence of
956
Term #1 of the Mid-divisor concatenation · Base 2 sequence of
1528
Term #1 of the Mid-divisor concatenation · Base 8 sequence of
764
Term #1 of the Mid-divisor concatenation · Base 10 sequence of
478
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
1528
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '2239' --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":"2239"},"decimal":false,"detail":2}}'