factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Cycle

Aliquot variants · Augmented · σ(n) − n + 1 of 12258 length 7 Enters a cycle of length 1 - a fixed point. ↓ .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	12258	2×3³×227
1	Fully factored	5	15103	11×1373
↳	Continues Reaches 1386 and continues as that sequence.
2	Fully factored	4	1386	2×3²×7×11
3	Fully factored	4	2359	7×337
↳	Continues Reaches 346 and continues as that sequence.
4	Fully factored	3	346	2×173
↳	Continues Reaches 177 and continues as that sequence.
5	Fully factored	3	177	3×59
↳	Continues Reaches 64 and continues as that sequence.
6	Fully factored	2	64	2⁶
↳	Cycle Enters a cycle of length 1 - a fixed point.

From the command linefdb · curl

fdb

fdb seq view '12258' --type 54 --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":"12258"},"type":54,"part":"last20","fr":0}}'