factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 188^80 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	182	8563039376…76<182>	2¹⁶⁰×47⁸⁰
1	Fully factored	182	8935345436…75<182>	3²×5²×11×17×31×41×47×605834861×4668342854…51<13>×3370380985…57<14>×3729475972…19<138>
2	Composite	183	1102845030…65<183>	3²×5×17×31×41×167×296398049×189776217671<12>×1207463207…47<155>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (155 digits) of term #2:

12074632078075399904795363153529062966872022864129853977526249239758047660585034442644134979832675567233266898212717592534706729727252511494155314317599747

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 '188^80' --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":"188^80"},"type":1,"part":"last20","fr":0}}'