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
781
Term #1 of the Home prime · Base 9 sequence of
153
Term #1 of the Inverse home prime · Base 3 sequence of
1084
Term #1 of the Inverse home prime · Base 6 sequence of
605
Term #2 of the Home prime · Base 18 sequence of
843
Term #1 of the Home prime · Base 21 sequence of
605
Term #1 of the Home prime · Base 26 sequence of
1257
Term #1 of the Home prime · Base 28 sequence of
99
Term #1 of the Home prime · Base 30 sequence of
1294
Term #1 of the Home prime · Base 33 sequence of
538
Term #1 of the Inverse home prime · Base 15 sequence of
326
Term #1 of the Inverse home prime · Base 24 sequence of
2323
Term #1 of the Conway climb · Base 6 sequence of
781
Term #1 of the Conway climb · Base 9 sequence of
459
Term #1 of the Conway climb · Base 10 sequence of
752
Term #2 of the Conway climb · Base 15 sequence of
1729
Term #2 of the Conway climb · Base 18 sequence of
843
Term #1 of the Conway climb · Base 26 sequence of
1257
Term #1 of the Conway climb · Base 28 sequence of
297
Term #1 of the Conway climb · Base 30 sequence of
1294
Term #1 of the Conway climb · Base 33 sequence of
538
Term #2 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
1324
Term #2 of the Second-class home prime · Base 8 sequence of
2156
Term #1 of the Mid-divisor concatenation · Base 10 sequence of
1128
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '2447' --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":"2447"},"decimal":false,"detail":2}}'