factordb · sequences

Sequence

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whole sequence last 20 terms last term range to

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Aliquot of 188^68 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	155	4392722311…96<155>	2¹³⁶×47⁶⁸
1	Fully factored	155	4583710237…95<155>	3²×5×17²×541×3001×90059×31682353×87868315849<11>×4535275843…31<34>×5649245666…63<42>×3379656169…21<46>
2	Fully factored	155	3874750294…05<155>	3²×5×234809×334693×851801×5028557417…13<21>×3787878100…83<26>×1892577545…99<41>×3568113014…37<50>
3	Fully factored	155	2841540103…95<155>	3²×5×1612361300…09<20>×3916326669…39<134>
4	Composite	155	2083796076…05<155>	3³×5×11×43×317×5693×19001×9516634779…31<139>
↳	Open Open - the last known term is composite and not yet fully factored.

Open end - submit a factor of the remaining composite (139 digits) of term #4:

9516634779531397908957266095436097749276149781280246119307364404632956632282981704604747446034410802875038389923845845538932306190869918031

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 '188^68' --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":"188^68"},"type":1,"part":"last20","fr":0}}'