factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 150^67 length 5 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	146	6282237584…00<146>	2⁶⁷×3⁶⁷×5¹³⁴
1	Fully factored	147	1727615335…00<147>	2³×3×5²×17×3596143×3857462306…83<19>×1220979113…63<118>
2	Fully factored	147	3943029519…20<147>	2³×3×5×3285857933…81<145>
3	Fully factored	147	7886059039…00<147>	2³×3×5²×13²×79×3947×1139734691<10>×2498601211…33<15>×8758447636…63<113>
4	Composite	148	1892778115…00<148>	2³×3×5²×4751×76705361×8656407785…01<133>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (133 digits) of term #4:

8656407785796794687614953316233986009494594730242242593246547941505033579864482319792162128242241020273005279386221084232248774520401

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 '150^67' --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":"150^67"},"type":1,"part":"last20","fr":0}}'