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 2 sequence of
973
Term #1 of the Home prime · Base 4 sequence of
973
Term #2 of the Home prime · Base 10 sequence of
445
Term #4 of the Inverse home prime · Base 3 sequence of
33
Term #1 of the Inverse home prime · Base 6 sequence of
1219
Term #1 of the Inverse home prime · Base 8 sequence of
723
Term #1 of the Inverse home prime · Base 9 sequence of
805
Term #2 of the Home prime · Base 12 sequence of
235
Term #1 of the Home prime · Base 16 sequence of
973
Term #1 of the Home prime · Base 18 sequence of
1555
Term #1 of the Home prime · Base 22 sequence of
1437
Term #1 of the Home prime · Base 30 sequence of
262
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
1876
Term #2 of the Inverse home prime · Base 14 sequence of
381
Term #2 of the Inverse home prime · Base 18 sequence of
377
Term #1 of the Inverse home prime · Base 36 sequence of
1219
Term #1 of the Conway climb · Base 2 sequence of
973
Term #1 of the Conway climb · Base 4 sequence of
973
Term #2 of the Conway climb · Base 10 sequence of
445
Term #2 of the Conway climb · Base 12 sequence of
235
Term #1 of the Conway climb · Base 16 sequence of
973
Term #1 of the Conway climb · Base 18 sequence of
1555
Term #1 of the Conway climb · Base 22 sequence of
1437
Term #1 of the Conway climb · Base 30 sequence of
176
Term #2 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
1186
Term #1 of the Distinct-prime home prime · Base 2 sequence of
973
Term #3 of the Distinct-prime home prime · Base 10 sequence of
202
Term #1 of the Distinct-prime home prime · Base 16 sequence of
973
Term #4 of the Distinct-prime home prime, descending · Base 3 sequence of
33
Term #3 of the Distinct-prime home prime, descending · Base 8 sequence of
345
Term #1 of the Second-class home prime · Base 10 sequence of
1178
Term #3 of the Second-class home prime · Base 16 sequence of
1846
Term #1 of the Mid-divisor concatenation · Base 2 sequence of
973
Term #2 of the Mid-divisor concatenation · Base 10 sequence of
445
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
973
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '1931' --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":"1931"},"decimal":false,"detail":2}}'