factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Terminates

Mid-divisor concatenation · Base 3 of 14 length 10 The sequence reaches a prime. ↓ .elf file

Show sequence-development graph

Term size (digits) across the sequence — How the sequence develops - decimal digits of each term vs iteration.

n	Status	Digits	Term	Factorization
0	Fully factored	2	14	2×7
1	Fully factored	2	25	5²
2	Fully factored	2	50	2×5²
3	Fully factored	3	145	5×29
4	Fully factored	3	434	2×7×31
5	Fully factored	4	1165	5×233
6	Fully factored	4	1448	2³×181
7	Fully factored	4	2125	5³×17
8	Fully factored	4	6160	2⁴×5×7×11
9	Fully factored	4	6317	6317
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '14' --type 141 --part last20

curl

curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"sequence_view","params":{"start":{"expr":"14"},"type":141,"part":"last20","fr":0}}'