factordbrpc · fdb
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Inverse home prime · Base 8 of 10906 length 25 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
5 Fully factored 12 141182723882<12> 2×19×3715334839<10>
6 Fully factored 13 1902251437…22<13> 2×32×105680635429<12>
7 Fully factored 14 5410848533…66<14> 2×2705424266…33<14>
8 Fully factored 15 2164339413…66<15> 2×3×5521×6533657591<10>
9 Fully factored 17 1370207308…02<17> 2×23×379×59791×13144783
10 Fully factored 18 9033026252…26<18> 2×37×1220679223…49<17>
11 Fully factored 19 6249877623…86<19> 2×47×443413×149946122063<12>
12 Fully factored 21 1610034226…46<21> 2×409×389051857×505911221
13 Fully factored 22 2225021082…30<22> 2×5×7×13×2445078112…83<19>
14 Fully factored 23 8012031957…90<23> 2×5×19×109×9941×3891638580…59<15>
15 Fully factored 26 2674313669…78<26> 2×37×401×439×2052918609…23<19>
16 Fully factored 27 2755380715…70<27> 2×5×2755380715…57<26>
17 Fully factored 28 1763443657…90<28> 2×5×83×1404107×1513154562…09<19>
18 Fully factored 30 1039831897…54<30> 2×31×3079×14683×3709769773…31<20>
19 Fully factored 31 2549334376…30<31> 2×3×5×7×17×79×3307×6011×65287×202907×34326287
20 Fully factored 35 4249388603…70<35> 2×5×7×11×5518686498…21<32>
21 Fully factored 37 1808363191…50<37> 2×52×29×10460893×1192199393…81<27>
22 Fully factored 38 6554185477…62<38> 2×31×8949961877<10>×626646351367<12>×1884878397…89<15>
23 Fully factored 41 2916708047…10<41> 2×3×5×7×157×471907×1874638764…79<31>
24 Composite 43 8244748477…82<43> 2×17×1451×96497×1731877898…59<34>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (34 digits) of term #24:
1731877898322920999965846807191559
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 '10906' --type 18 --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":"10906"},"type":18,"part":"last20","fr":0}}'