factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 188^70 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	160	1552563773…24<160>	2¹⁴⁰×47⁷⁰
1	Fully factored	160	1620066546…63<160>	3²×11×31×43×71×73×24298181×1789718504…73<24>×1329849264…17<25>×4095674108…23<96>
2	Fully factored	160	1151834921…81<160>	3²×11²×43×239×5807×4608703618…77<26>×3845611423…43<123>
3	Fully factored	159	7276104126…59<159>	3²×11²×479×2083180335…33<19>×1207539086…57<22>×5545075297…69<114>
4	Composite	159	4300248384…41<159>	3²×139×643×3969051353…09<18>×1346909886…93<136>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (136 digits) of term #4:

1346909886310068479841203330139495686860991903248615467904011667379754627661524885968393918882901412166736780707120809779677568794431793

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 '188^70' --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":"188^70"},"type":1,"part":"last20","fr":0}}'