factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Conway climb · Base 16 of 274 length 19 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	3	274	2×137
1	Fully factored	3	649	11×59
2	Fully factored	4	2875	5³×23
3	Fully factored	5	21271	89×239
4	Fully factored	5	23023	7×11×13×23
5	Fully factored	6	507159	3²×37×1523
6	Fully factored	8	52581875	5⁴×84131
7	Fully factored	8	88164515	5×773×22811
8	Fully factored	10	1392859419<10>	3×7×17×31×127×991
9	Fully factored	13	3784167650…71<13>	3×281×1427×3145711
10	Fully factored	15	8637590473…27<15>	19×89×510797780797<12>
11	Fully factored	16	5446391890…25<16>	5²×691×315275941543<12>
12	Fully factored	18	3700552472…31<18>	3×17×19×1279×298587928081<12>
13	Fully factored	21	9051303560…69<21>	13×29×6853633×350307096409<12>
14	Fully factored	23	6193325550…29<23>	11²×29×31×41×2333×2383×2497791649<10>
15	Fully factored	27	2153263193…29<27>	396957907×5424411897…47<18>
16	Fully factored	27	4576613079…79<27>	13×29×859×87433×340007×47538606263<11>
17	Fully factored	31	1039006088…19<31>	3×1395809×2481251824…97<24>
18	Composite	32	6253465859…29<32>	7×373×2395046288…39<29>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (29 digits) of term #18:

23950462887181413129255061039

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 '274' --type 101 --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":"274"},"type":101,"part":"last20","fr":0}}'