factordbrpc · fdb
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Aliquot variants · Bi-unitary · σ**(n) − n of 3792 length 223 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.
nStatus DigitsTermFactorization
203 Fully factored 29 1386636730…78<29> 2×3×23×37×877609×3094431129…57<19>
204 Fully factored 29 1585429401…42<29> 2×3×2642382336…57<28>
205 Fully factored 29 1585429401…54<29> 2×3×7×415861×67975057×1335364552…81<14>
206 Fully factored 29 2038417998…58<29> 2×3×1013×1297×2585785962…13<22>
207 Fully factored 29 2045588900…38<29> 2×3×7×53×947×2683×3616783783…13<19>
208 Fully factored 29 2725070248…94<29> 2×3×4541783747…49<28>
209 Fully factored 29 2725070248…06<29> 2×32×1513927915…17<28>
210 Fully factored 29 1816713499…34<29> 2×33×13×23×53×2711×3853×2032437029…71<16>
211 Fully factored 29 2808510577…46<29> 2×33×32413×72354613×2217669633…21<15>
212 Fully factored 29 3432816675…94<29> 2×33×6357067917…11<27>
213 Fully factored 29 4195664825…46<29> 2×32×17×34429×372639593×1068724966…03<14>
214 Fully factored 29 3208664646…54<29> 2×32×31×5750295066…63<26>
215 Fully factored 29 2311618616…86<29> 2×32×43×191×722177413×2165199680…83<15>
216 Fully factored 29 1651316993…54<29> 2×32×374953×31972254653<11>×76525794817<11>
217 Fully factored 29 1100885335…86<29> 2×33×1759×17398679×6661410725…69<16>
218 Fully factored 29 1346917459…14<29> 2×33×167×1493587779…73<25>
219 Fully factored 29 1664155503…26<29> 2×33×101×65563×128467×2238749×161816561
220 Fully factored 29 2070670647…74<29> 2×33×23×1667206640…97<26>
221 Fully factored 29 2730884477…66<29> 2×33×11×97×887×90107×5930113411…43<16>
222 Composite 29 3965307298…54<29> 2×33×53×1385502200…67<26>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (26 digits) of term #222:
13855022006328653483454467
Check for factors - let the server run a small P-1 / P+1 / ECM step on the composite:
level 0 done · takes up to a minute
From the command linefdb · curl
fdb
fdb seq view '3792' --type 59 --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":"3792"},"type":59,"part":"last20","fr":0}}'