factordb · sequences

Sequence

Start with

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whole sequence last 20 terms last term range to

Terminates

Second-class home prime · Base 16 of 72 length 7 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	72	2³×3²
1	Fully factored	4	8755	5×17×103
2	Fully factored	4	4455	3⁴×5×11
3	Fully factored	6	209755	5×7×13×461
4	Fully factored	6	512461	31×61×271
5	Fully factored	6	250127	389×643
6	Fully factored	3	643	643
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '72' --type 139 --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":"72"},"type":139,"part":"last20","fr":0}}'