factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Terminates

Aliquot of 154 length 8 The sequence reaches 1. ↓ .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	154	2×7×11
↳	Merges Joins the aliquot sequence of 60 (at index 4 of that sequence) - the terms below continue there.
1	Fully factored	3	134	2×67
2	Fully factored	2	70	2×5×7
3	Fully factored	2	74	2×37
↳	Drops below start Descends to 40 and continues as that sequence.
4	Fully factored	2	40	2³×5
5	Fully factored	2	50	2×5²
6	Fully factored	2	43	43
7	unit	1	1	-
8	terminus	1	0	-
↳	Terminates The sequence reaches 1 and terminates.

From the command linefdb · curl

fdb

fdb seq view '154' --type 1 --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":"154"},"type":1,"part":"last20","fr":0}}'