factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 188^69 length 4 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	157	8258317945…48<157>	2¹³⁸×47⁶⁹
1	Fully factored	157	8617375247…08<157>	2⁴×139×2596550191…09<42>×1206861221…01<54>×1236477355…13<60>
2	Fully factored	157	8198905585…92<157>	2⁴×23×3820618060…11<15>×8365889509…13<24>×1137795006…67<37>×6126300484…49<80>
3	Composite	157	8377142663…08<157>	2⁴×11×541×19531×4504654622…73<148>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (148 digits) of term #3:

4504654622131449088893171450562717707383796767308131103699974656633876451144738905213443559834153036419974898528146974237582077203288898706920426373

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 '188^69' --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":"188^69"},"type":1,"part":"last20","fr":0}}'