factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Conway climb · Base 35 of 4265 length 12 Not fully computed yet - the last known term is composite. ↓ .elf file

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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	4265	5×853
1	Fully factored	4	6978	2×3×1163
2	Fully factored	5	90588	2²×3×7549
3	Fully factored	9	108181174	2×19×2846873
4	Fully factored	10	4677293748<10>	2²×3×389774479
5	Fully factored	13	4638333946…54<13>	2×1553×1493346409<10>
6	Fully factored	15	1604875972…84<15>	2³×4523×5903×751367
7	Fully factored	18	2016649723…92<18>	2⁴×3×13×61×1495783×3541991
8	Fully factored	22	8763578802…91<22>	3×67×4359989454…91<20>
9	Fully factored	24	4426201098…41<24>	3⁴×47×1097×9489841×11168187619<11>
10	Fully factored	27	5529310287…19<27>	12979×4260197462…61<23>
11	Composite	28	1880493066…86<28>	2×2819×3335390328…47<24>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (24 digits) of term #11:

333539032810882735310647

Check for factors - let the server run a small P-1 / P+1 / ECM step on the composite:

From the command linefdb · curl

fdb

fdb seq view '4265' --type 120 --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":"4265"},"type":120,"part":"last20","fr":0}}'