factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 188^87 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	198	7107762142…92<198>	2¹⁷⁴×47⁸⁷
1	Composite	198	7416795279…28<198>	2⁶×1087×2219987078…83<34>×4802377847…87<160>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (160 digits) of term #1:

4802377847369860360059485017462924187624561645889702783316921487492754506265162877508097564858254962866063285577480283384566208845953085181930373001632655446787

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 '188^87' --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":"188^87"},"type":1,"part":"last20","fr":0}}'