factordbrpc · fdb
Sign in
Show
Open
Home prime · Base 7 of 19685 length 23 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
3 Fully factored 8 13406856 23×3×19×29401
4 Fully factored 10 4619870333<10> 13×59×6023299
5 Fully factored 12 182323619725<12> 52×13×560995753
6 Fully factored 13 3901826659…92<13> 22×3×13×17×193×7623197
7 Fully factored 16 3830847013…17<16> 37×313×330787238857<12>
8 Fully factored 16 8819943626…53<16> 3×149×1549×13903×916217
9 Fully factored 18 2741889067…09<18> 3×9139630223…03<17>
10 Fully factored 19 1767033894…24<19> 23×13×1039×1635294564…79<14>
11 Fully factored 21 4467914443…17<21> 41×1089735230…37<20>
12 Fully factored 22 1133015993…00<22> 23×52×83×853×21157×3782028829<10>
13 Fully factored 25 7545177958…32<25> 210×3×291791261×8417361809…71<13>
14 Fully factored 32 4331160386…77<32> 3×11497×91253×594679×2314028623…81<17>
15 Fully factored 33 4786936656…65<33> 3×5×11×2901173731…81<31>
16 Fully factored 35 2385522013…76<35> 23×337×8848375419…81<31>
17 Fully factored 36 7320801381…54<36> 2×539499211×6784811944…07<27>
18 Fully factored 37 4963466611…04<37> 22×13×73×1031×3347×11767304963<11>×3220086325…89<17>
19 Fully factored 41 1218677298…24<41> 22×13×17×23×17167×2544029×1372436170…49<26>
20 Fully factored 44 2926567211…06<44> 2×269×1001445870…37<18>×5431862234…51<24>
21 Fully factored 46 1717856571…05<46> 5×257×1336853363…13<43>
22 Composite 46 3547909917…41<46> 3×131×9027760604…37<43>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (43 digits) of term #22:
9027760604234128407867736243965725996645437
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 '19685' --type 7 --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":"19685"},"type":7,"part":"last20","fr":0}}'