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 aliquot sequence of
270305
Term #1 of the Inverse home prime · Base 2 sequence of
56493
Term #1 of the Inverse home prime · Base 4 sequence of
56493
Term #1 of the Inverse home prime · Base 5 sequence of
40178
Term #1 of the Home prime · Base 18 sequence of
22151
Term #1 of the Home prime · Base 30 sequence of
58341
Term #1 of the Home prime · Base 31 sequence of
16599
Term #1 of the Home prime · Base 32 sequence of
6429
Term #1 of the Home prime · Base 33 sequence of
57146
Term #1 of the Home prime · Base 34 sequence of
43678
Term #1 of the Inverse home prime · Base 20 sequence of
11797
Term #1 of the Conway climb · Base 18 sequence of
22151
Term #1 of the Conway climb · Base 30 sequence of
58341
Term #1 of the Conway climb · Base 31 sequence of
16599
Term #1 of the Conway climb · Base 32 sequence of
6429
Term #1 of the Conway climb · Base 33 sequence of
57146
Term #1 of the Conway climb · Base 34 sequence of
43678
Term #1 of the Prime-stopping maps · σ(n) − 1 until a prime sequence of
75333
Term #1 of the Distinct-prime home prime, descending · Base 2 sequence of
75333
Term #2 of the Second-class home prime · Base 3 sequence of
37710
Term #3 of the Second-class home prime · Base 8 sequence of
39648
Term #3 of the Second-class home prime · Base 10 sequence of
9826
Term #2 of the Mid-divisor concatenation · Base 2 sequence of
46400
Term #1 of the Mid-divisor concatenation · Base 8 sequence of
51432
Term #2 of the Mid-divisor concatenation · Base 16 sequence of
46400
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '100447' --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":"100447"},"decimal":false,"detail":2}}'