factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Terminates

Home prime · Base 3 of 4213 length 12 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	4213	11×383
1	Fully factored	4	8402	2×4201
2	Fully factored	5	17323	17×1019
3	Fully factored	5	38198	2×71×269
4	Fully factored	6	170126	2×11²×19×37
5	Fully factored	7	3863818	2×7×275987
6	Fully factored	8	13562012	2²×613×5531
7	Fully factored	8	42291176	2³×271×19507
8	Fully factored	9	378425182	2×189212591
9	Fully factored	9	964053569	59×16339891
10	Fully factored	10	2556096430<10>	2×5×647×395069
11	Fully factored	10	9254908643<10>	9254908643<10>
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '4213' --type 3 --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":"4213"},"type":3,"part":"last20","fr":0}}'