factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Terminates

Distinct-prime home prime, descending · Base 3 of 321 length 7 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	3	321	3×107
1	Fully factored	3	966	2×3×7×23
2	Fully factored	4	5789	7×827
3	Fully factored	4	7450	2×5²×149
4	Fully factored	4	4040	2³×5×101
↳	Merges Joins the sequence of 222 (at index 2 of that sequence) - the terms below continue there.
5	Fully factored	4	2744	2³×7³
↳	Merges Joins the sequence of 14 (at index 1 of that sequence) - the terms below continue there.
6	Fully factored	2	23	23
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '321' --type 131 --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":"321"},"type":131,"part":"last20","fr":0}}'