factordb · sequences

Sequence

Start with

Show

whole sequence last 20 terms last term range to

Open

Conway climb · Base 31 of 9255 length 15 Not fully computed yet - the last known term is composite. ↓ .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	9255	3×5×617
1	Fully factored	5	94795	5×18959
2	Fully factored	6	167914	2×59×1423
3	Fully factored	8	59017394	2×29508697
4	Fully factored	10	1804516059<10>	3×601505353
5	Fully factored	10	3264016396<10>	2²×41×19902539
6	Fully factored	13	1762001000…34<13>	2×4483×196520299
7	Fully factored	14	5685811984…64<14>	2²×13²×84109644739<11>
8	Fully factored	17	5280171534…08<17>	2³×6600214418…51<16>
9	Fully factored	19	1658151212…66<19>	2×3³×23×29×1433×99787×321947
10	Fully factored	23	4929346274…67<23>	167×1249×1820629×129804264781<12>
11	Fully factored	27	1215101603…56<27>	2³×263×43628791×1323712531…29<16>
12	Fully factored	31	1414524833…58<31>	2×7×13×47×1653641376…77<27>
13	Fully factored	34	1445726238…56<34>	2²×263167×1373392407…17<28>
14	Composite	37	1286554949…98<37>	2×3³×7×13×2618141940…57<33>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (33 digits) of term #14:

261814194089741411017652826898457

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 '9255' --type 116 --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":"9255"},"type":116,"part":"last20","fr":0}}'