factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Terminates

Mid-divisor concatenation · Base 16 of 65 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	2	65	5×13
1	Fully factored	2	93	3×31
2	Fully factored	3	799	17×47
3	Fully factored	4	4399	53×83
4	Fully factored	5	13651	11×17×73
5	Fully factored	5	18875	5³×151
6	Fully factored	5	32151	3×7×1531
7	Fully factored	5	87547	87547
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '65' --type 144 --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":"65"},"type":144,"part":"last20","fr":0}}'