Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 2 | 75 | 3×52 |
| 1 | Fully factored | 4 | 1430 | 2×5×11×13 |
| 2 | Fully factored | 5 | 20971 | 67×313 |
| 3 | Fully factored | 5 | 29860 | 22×5×1493 |
| 4 | Fully factored | 7 | 8604962 | 2×4302481 |
| 5 | Fully factored | 9 | 175834723 | 17×859×12041 |
| 6 | Fully factored | 11 | 30785576417<11> | 892×3886577 |
| 7 | Fully factored | 10 | 7645239548<10> | 22×1911309887<10> |
| 8 | Fully factored | 13 | 1666117121…71<13> | 79×2731×7722479 |
| 9 | Fully factored | 14 | 6298235867…29<14> | 929×67795865101<11> |
| 10 | Fully factored | 15 | 7379539591…50<15> | 2×52×71×15559×13360393 |
| 11 | Fully factored | 19 | 7276099014…52<19> | 22×11×5807×70753×402484573 |
| 12 | Fully factored | 22 | 3035099325…28<22> | 22×13×17×101×3399376512…67<17> |
| 13 | Composite | 25 | 1341616577…22<25> | 2×6708082889…11<24> |
| ↳ | Open Open - the last known term is composite and not yet fully factored. | |||
Open end - submit a factor of the remaining composite
(24 digits) of term #13:
670808288938283605698011
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 '75' --type 106 --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":"75"},"type":106,"part":"last20","fr":0}}'