factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

Terminates

Distinct-prime home prime, descending · Base 10 of 40405 length 11 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	5	40405	5×8081
1	Fully factored	5	80815	5×7×2309
2	Fully factored	6	230975	5²×9239
3	Fully factored	5	92395	5×17×1087
4	Fully factored	7	1087175	5²×43487
5	Fully factored	6	434875	5³×7²×71
↳	Merges Joins the sequence of 2485 (at index 1 of that sequence) - the terms below continue there.
6	Fully factored	4	7175	5²×7×41
↳	Merges Joins the sequence of 1435 (at index 1 of that sequence) - the terms below continue there.
7	Fully factored	4	4175	5²×167
↳	Merges Joins the sequence of 205 (at index 3 of that sequence) - the terms below continue there.
8	Fully factored	4	1675	5²×67
9	Fully factored	3	675	3³×5²
↳	Merges Joins the sequence of 15 (at index 1 of that sequence) - the terms below continue there.
10	Fully factored	2	53	53
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '40405' --type 133 --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":"40405"},"type":133,"part":"last20","fr":0}}'