factordbrpc · fdb
Sign in
Show
Open
Inverse home prime · Base 35 of 6601 length 18 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
0 Fully factored 4 6601 7×23×41
1 Fully factored 5 51037 7×23×317
2 Fully factored 6 389137 7×23×2417
3 Fully factored 7 2961637 7×423091
4 Fully factored 8 14808192 27×3×72×787
5 Fully factored 19 2171544436…22<19> 2×3×67×107×5048459656…23<14>
6 Fully factored 23 9280409845…32<23> 22×3×19×199×2045404620…81<19>
7 Fully factored 28 3759997003…72<28> 26×31×36353×5213214260…11<20>
8 Fully factored 36 1438089840…97<36> 48193×1930307×1545879616…47<25>
9 Fully factored 39 1218394892…93<39> 571×2089×1021441553…47<33>
10 Fully factored 40 5364802559…21<40> 19×17539×42461×1286086460…01<15>×2948050578…21<16>
11 Fully factored 42 5232288523…59<42> 131×3994113376…89<40>
12 Fully factored 43 4892788886…56<43> 22×3×239×178793×9541723308…19<34>
13 Fully factored 48 7520370165…72<48> 23×32×188729×753631×7343605326…99<35>
14 Fully factored 55 8685481602…47<55> 3×2895160534…49<55>
15 Fully factored 57 1013306186…18<57> 2×167×561943×8600795680…01<14>×6277161914…89<34>
16 Fully factored 61 1114089510…22<61> 2×3194634953<10>×8223346857…47<16>×2120411941…21<35>
17 Composite 64 4610129064…07<64> 11×2056751×2037692662…87<57>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (57 digits) of term #17:
203769266288534911207282879974755778463411315764844482487
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 '6601' --type 85 --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":"6601"},"type":85,"part":"last20","fr":0}}'