factordbrpc · fdb
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Inverse home prime · Base 14 of 5243 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 9 645991153 29×67×332471
6 Fully factored 11 12772219097<11> 11×281×4132067
7 Fully factored 12 158737489817<12> 17×1693×5515357
8 Fully factored 13 2966291695…13<13> 19×23×43×6311×25013
9 Fully factored 16 7235174205…99<16> 17029×424873698131<12>
10 Fully factored 17 1632194798…25<17> 33×52×25013×966723851
11 Fully factored 20 1997352672…29<20> 17×5581×63601×3310014277<10>
12 Fully factored 23 1340411852…57<23> 3×11×98101×4140481849…29<16>
13 Fully factored 24 4364627000…69<24> 17×19×5167×239053×463849×2358497
14 Fully factored 28 1006792865…69<28> 3×11×13675623469<11>×2230894611…97<16>
15 Fully factored 28 9034153114…89<28> 32×11×1014121×8998341604…91<20>
16 Fully factored 31 1859151568…69<31> 3×416443×586459×343059947×7396568857<10>
17 Fully factored 33 6188580124…73<33> 3×43×79063×6067754744…99<26>
18 Fully factored 35 8954726046…21<35> 11×31×9151×86029×40462938863<11>×8243792883…53<13>
19 Fully factored 39 1351897786…41<39> 3×15187×2967225887…81<34>
20 Fully factored 40 1595845295…65<40> 3×5×389643701×2730435166…91<30>
21 Fully factored 41 7897910821…85<41> 5×103×4032559669<10>×3597735132…29<13>×1057048726…79<17>
22 Fully factored 43 2426832642…43<43> 183823×2941836311<10>×3837587261<10>×1169400325…71<19>
23 Fully factored 45 2684775839…87<45> 32×88861889×156782723×2141173093…69<28>
24 Composite 47 6528725121…97<47> 11×16267×18919×1928546233…99<38>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (38 digits) of term #24:
19285462339936925764052602474991483999
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 '5243' --type 64 --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":"5243"},"type":64,"part":"last20","fr":0}}'