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
2450
Term #1 of the Home prime · Base 6 sequence of
98
Term #1 of the Inverse home prime · Base 6 sequence of
553
Term #1 of the Home prime · Base 22 sequence of
2155
Term #1 of the Home prime · Base 28 sequence of
1173
Term #1 of the Home prime · Base 30 sequence of
453
Term #1 of the Home prime · Base 31 sequence of
1858
Term #1 of the Home prime · Base 33 sequence of
1346
Term #1 of the Home prime · Base 35 sequence of
802
Term #1 of the Home prime · Base 36 sequence of
98
Term #3 of the Inverse home prime · Base 26 sequence of
57
Term #1 of the Inverse home prime · Base 28 sequence of
2323
Term #1 of the Inverse home prime · Base 32 sequence of
267
Term #1 of the Inverse home prime · Base 34 sequence of
2407
Term #1 of the Inverse home prime · Base 36 sequence of
553
Term #2 of the Conway climb · Base 6 sequence of
114
Term #1 of the Conway climb · Base 11 sequence of
578
Term #1 of the Conway climb · Base 20 sequence of
539
Term #1 of the Conway climb · Base 22 sequence of
2155
Term #1 of the Conway climb · Base 28 sequence of
1173
Term #1 of the Conway climb · Base 30 sequence of
453
Term #1 of the Conway climb · Base 31 sequence of
1858
Term #1 of the Conway climb · Base 33 sequence of
1346
Term #1 of the Conway climb · Base 35 sequence of
802
Term #1 of the Conway climb · Base 36 sequence of
896
Term #2 of the Second-class home prime · Base 3 sequence of
2260
Term #3 of the Second-class home prime · Base 10 sequence of
1918
Term #1 of the Mid-divisor concatenation · Base 16 sequence of
385
Is factor of
Primality
Verified directlyproven prime
Checked deterministically (below 300 digits).
From the command linefdb · curl
fdb
fdb number '2851' --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":"2851"},"decimal":false,"detail":2}}'