factordb · sequences

Sequence

Start with

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whole sequence last 20 terms last term range to

Terminates

Mid-divisor concatenation · Base 3 of 7511 length 18 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	7511	7×29×37
1	Fully factored	4	9194	2×4597
2	Fully factored	5	17719	13×29×47
3	Fully factored	5	34640	2⁴×5×433
4	Fully factored	5	58753	41×1433
5	Fully factored	5	91100	2²×5²×911
6	Fully factored	6	219611	7×137×229
7	Fully factored	6	501782	2×89×2819
8	Fully factored	7	1170677	23²×2213
9	Fully factored	7	3472982	2×29×59879
10	Fully factored	8	10334405	5×43×71×677
11	Fully factored	8	20034118	2×13×103×7481
12	Fully factored	8	52718555	5×10543711
13	Fully factored	8	82288246	2×41144123
14	Fully factored	9	127237565	5×7³×13²×439
15	Fully factored	9	163010288	2⁴×7×47×173×179
16	Fully factored	9	197318654	2×13²×583783
17	Fully factored	9	539464957	539464957
↳	Terminates The sequence reaches a prime and terminates.

From the command linefdb · curl

fdb

fdb seq view '7511' --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":"7511"},"type":141,"part":"last20","fr":0}}'