factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 188^90 length 2 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	205	4722874809…24<205>	2¹⁸⁰×47⁹⁰
1	Composite	205	4928217192…63<205>	3⁵×7×11×19×31×37×61×131×631×6983×3432442651…67<186>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (186 digits) of term #1:

343244265131266354301134146993492050577374701625523967670376071347852347792681305880745232940242252419159665142077392347539144946907186612974164193790774340479516244552797512868002896767

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

Already checked (P-1, P+1 and ECM steps done, level 3).

From the command linefdb · curl

fdb

fdb seq view '188^90' --type 1 --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":"188^90"},"type":1,"part":"last20","fr":0}}'