Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 5 | 40909 | 11×3719 |
| 1 | Fully factored | 6 | 105590 | 2×5×10559 |
| 2 | Fully factored | 7 | 9151166 | 2×4575583 |
| 3 | Fully factored | 9 | 176107825 | 52×47×67×2237 |
| 4 | Fully factored | 12 | 198312314981<12> | 11×17×29×31×1179637 |
| 5 | Fully factored | 15 | 1970338109…45<15> | 5×29×239×5685581039<10> |
| 6 | Fully factored | 17 | 3727189945…52<17> | 23×4127×1128904151…47<13> |
| 7 | Fully factored | 21 | 1431102607…60<21> | 23×5×3577756519…89<19> |
| 8 | Fully factored | 25 | 1325050796…40<25> | 22×5×13×254147×2005276165…27<17> |
| 9 | Composite | 29 | 1231609408…36<29> | 25×3848779402…23<27> |
| ↳ | Open Open - the last known term is composite and not yet fully factored. | |||
Open end - submit a factor of the remaining composite
(27 digits) of term #9:
384877940246253706193890723
Check for factors - let the server run a small P-1 / P+1 / ECM step on the composite:
From the command linefdb · curl
fdb
fdb seq view '40909' --type 38 --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":"40909"},"type":38,"part":"last20","fr":0}}'