factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 150^57 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	125	1089436110…00<125>	2⁵⁷×3⁵⁷×5¹¹⁴
1	Fully factored	125	2995949302…52<125>	2²×3×1373×3593×16921×1855997123<10>×1611469667…33<104>
2	Composite	125	4002051078…84<125>	2²×3×97×16604839×2070594127…79<115>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (115 digits) of term #2:

2070594127446841803583938367691005379865707762692619215557400417029401407680592287929767308184395569014738843677079

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 '150^57' --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":"150^57"},"type":1,"part":"last20","fr":0}}'