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 2 sequence of
328
Term #1 of the Home prime · Base 4 sequence of
328
Term #1 of the Home prime · Base 10 sequence of
406
Term #1 of the Home prime · Base 14 sequence of
2353
Term #1 of the Home prime · Base 28 sequence of
507
Term #1 of the Home prime · Base 36 sequence of
174
Term #1 of the Aliquot variants · Quasi · σ(n) − n − 1 sequence of
1638
Term #1 of the Inverse home prime · Base 12 sequence of
1135
Term #1 of the Inverse home prime · Base 18 sequence of
1661
Term #1 of the Inverse home prime · Base 24 sequence of
1921
Term #1 of the Inverse home prime · Base 27 sequence of
202
Term #1 of the Inverse home prime · Base 28 sequence of
1261
Term #1 of the Conway climb · Base 8 sequence of
1025
Term #1 of the Conway climb · Base 10 sequence of
406
Term #1 of the Conway climb · Base 14 sequence of
2353
Term #1 of the Conway climb · Base 29 sequence of
1029
Term #1 of the Conway climb · Base 36 sequence of
174
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
936
Term #1 of the Distinct-prime home prime · Base 10 sequence of
406
Term #1 of the Second-class home prime · Base 2 sequence of
656
Term #5 of the Second-class home prime · Base 3 sequence of
1344
Term #1 of the Second-class home prime · Base 10 sequence of
812
Term #2 of the Mid-divisor concatenation · Base 10 sequence of
581
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '2729' --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":"2729"},"decimal":false,"detail":2}}'