factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Terminates

Mid-divisor concatenation · Base 3 of 3666 length 8 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	4	3666	2×3×13×47
1	Fully factored	4	3885	3×5×7×37
2	Fully factored	4	9096	2³×3×379
3	Fully factored	5	17875	5³×11×13
4	Fully factored	5	30518	2×15259
5	Fully factored	5	54625	5³×19×23
6	Fully factored	5	91562	2×17×2693
7	Fully factored	6	225767	225767
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '3666' --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":"3666"},"type":141,"part":"last20","fr":0}}'