factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Conway climb · Base 33 of 2811 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	2811	3×937
1	Fully factored	4	4204	2²×1051
2	Fully factored	5	75103	7×10729
3	Fully factored	6	262288	2⁴×13²×97
4	Fully factored	8	83483926	2×1399×29837
5	Fully factored	10	2633241638<10>	2×67×167×117671
6	Fully factored	13	2899543756…83<13>	103×9467×2973583
7	Fully factored	15	1452305854…37<15>	31×977×4079×1175569
8	Fully factored	16	1480399073…00<16>	2⁴×5²×3700997684…91<13>
9	Fully factored	19	3545701874…32<19>	2³×107×12172997×340275701
10	Fully factored	22	3803208151…10<22>	2×5×17×2237181265…73<20>
11	Composite	24	1299176072…53<24>	1299176072…53<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:

129917607237197180339353

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 '2811' --type 118 --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":"2811"},"type":118,"part":"last20","fr":0}}'