factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Terminates

Mid-divisor concatenation · Base 3 of 412 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	3	412	2²×103
1	Fully factored	4	1075	5²×43
2	Fully factored	4	2068	2²×11×47
3	Fully factored	4	3611	23×157
4	Fully factored	4	5746	2×13²×17
5	Fully factored	4	8431	8431
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '412' --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":"412"},"type":141,"part":"last20","fr":0}}'