factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Terminates

Aliquot variants · Quasi · σ(n) − n − 1 of 22452 length 6 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	5	22452	2²×3×1871
1	Fully factored	5	29963	19²×83
↳	Continues Reaches 2040 and continues as that sequence.
2	Fully factored	4	2040	2³×3×5×17
3	Fully factored	4	4439	23×193
↳	Merges Joins the sequence of 162 (at index 4 of that sequence) - the terms below continue there.
4	Fully factored	3	216	2³×3³
5	Fully factored	3	383	383
6	terminus	1	0	-
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '22452' --type 55 --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":"22452"},"type":55,"part":"last20","fr":0}}'