factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 150^73 length 6 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	159	7155861248…00<159>	2⁷³×3⁷³×5¹⁴⁶
1	Fully factored	160	1967861843…32<160>	2²×3×37×44983×7401432292…17<45>×1230473842…69<52>×1081869960…17<57>
2	Fully factored	160	2748020021…48<160>	2²×3×1433×5393503697<10>×3122814057…43<18>×7176797649…91<19>×1322040160…33<110>
3	Fully factored	160	3668501257…24<160>	2²×3×19×37×127×853×482863×48153517×1115329463<10>×9708086054…73<23>×1594448940…91<106>
4	Fully factored	160	5669194550…16<160>	2²×3×19×4877×613729097×2544108134…83<16>×3265287893…61<130>
5	Composite	160	8257998067…04<160>	2²×3×19×2697552474…11<15>×4910443845…91<17>×2734319623…93<127>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (127 digits) of term #5:

2734319623662048102307925053328422835015769602870984447960345219201937597093524989358351686826255946954584724869805907212075493

Check for factors - let the server run a small P-1 / P+1 / ECM step on the composite:

From the command linefdb · curl

fdb

fdb seq view '150^73' --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":"150^73"},"type":1,"part":"last20","fr":0}}'