factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 188^61 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	139	5292109297…88<139>	2¹²²×47⁶¹
1	Fully factored	139	5522201006…48<139>	2⁴×23×2473×2767×6090305581…37<16>×9208323820…57<32>×3910312347…19<82>
2	Composite	139	5650799880…92<139>	2⁴×1427348461…63<22>×2474343176…99<117>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (117 digits) of term #2:

247434317632939302223321598170071176149503917693424335905025188268422353402465100022524815481284917508194423365042199

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 '188^61' --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":"188^61"},"type":1,"part":"last20","fr":0}}'