factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 150^87 length 3 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	190	2089005280…00<190>	2⁸⁷×3⁸⁷×5¹⁷⁴
1	Fully factored	190	5744764522…00<190>	2⁴×3×5²×624606882169<12>×8302670222…79<32>×5113083188…43<64>×1805442134…29<80>
2	Composite	191	1265763116…00<191>	2⁴×3×5²×17×3092644289…11<20>×2006283483…89<167>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (167 digits) of term #2:

20062834834107847595327965429253737346146213313633854162799853142848336509750181114946896455547600073315190888133839664011733673258643258315997971067922836427886717789

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 '150^87' --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":"150^87"},"type":1,"part":"last20","fr":0}}'