factordbrpc · fdb
Sign in
Show
Open
Inverse home prime · Base 22 of 8767 length 24 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
4 Fully factored 8 31879741 101×439×719
5 Fully factored 9 168642641 829×203429
6 Fully factored 10 2166112821<10> 3×457×1579951
7 Fully factored 11 16823328305<11> 5×7×239×307×6551
8 Fully factored 12 742823783531<12> 4001×6101×30431
9 Fully factored 13 3450328826…73<13> 3×1150109608…91<13>
10 Fully factored 14 2530241139…05<14> 5×13×19×30577×670039
11 Fully factored 16 1671317390…15<16> 3×5×13×827227×10360951
12 Fully factored 18 5685662455…37<18> 67429723×8431982519<10>
13 Fully factored 18 9560173686…99<18> 32×41×1489×7853×221569063
14 Fully factored 22 5884857225…73<22> 3×13×37×3907×17783×58697710231<11>
15 Fully factored 26 3429814633…61<26> 32×7×23×113×33637×2754937×2260449937<10>
16 Fully factored 31 6807031906…21<31> 151×416023×37094069×2921184731…33<16>
17 Fully factored 33 8261404231…71<33> 139×5943456281…89<31>
18 Fully factored 34 2876632840…15<34> 32×5×2428991×2631758381…77<26>
19 Fully factored 37 1444200401…29<37> 3×8153868329…51<17>×5903947847…93<19>
20 Fully factored 38 3673330831…17<38> 1090457×1751149×1982993×9700792557…33<19>
21 Fully factored 40 1327845145…01<40> 727×846067433×2770417469<10>×7792249032…19<18>
22 Fully factored 43 1135719489…83<43> 33×19×127×2724771961…73<13>×6397640477…21<25>
23 Composite 47 1926560820…53<47> 3×312×1163×5745904014…57<40>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (40 digits) of term #23:
5745904014378952123490086133287652616457
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 '8767' --type 72 --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":"8767"},"type":72,"part":"last20","fr":0}}'