Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 3 | 121 | 112 |
| 1 | Fully factored | 3 | 299 | 13×23 |
| 2 | Fully factored | 3 | 374 | 2×11×17 |
| 3 | Fully factored | 4 | 1772 | 22×443 |
| 4 | Fully factored | 5 | 41267 | 29×1423 |
| 5 | Fully factored | 6 | 572230 | 2×5×57223 |
| 6 | Fully factored | 8 | 31412242 | 2×191×82231 |
| 7 | Fully factored | 9 | 876428440 | 23×5×107×193×1061 |
| 8 | Fully factored | 14 | 1615232447…61<14> | 472×60607×120647 |
| 9 | Fully factored | 15 | 3590001500…85<15> | 5×7×1025714714…91<14> |
| 10 | Fully factored | 17 | 2924679790…49<17> | 51593×566875310693<12> |
| 11 | Fully factored | 18 | 3934280179…84<18> | 23×4917850223…23<17> |
| 12 | Fully factored | 19 | 8604572714…20<19> | 23×5×13×89×1619×33013×3478597 |
| 13 | Fully factored | 25 | 4562894636…19<25> | 7×13×58169×8620003662…61<18> |
| 14 | Fully factored | 27 | 4352819144…78<27> | 2×7×193×1610961933…39<24> |
| 15 | Fully factored | 29 | 9618844087…53<29> | 11×17×1901×2705821615…19<24> |
| 16 | Composite | 32 | 1331491814…80<32> | 27×5×2080455959…67<29> |
| ↳ | Open Open - the last known term is composite and not yet fully factored. | |||
Open end - submit a factor of the remaining composite
(29 digits) of term #16:
20804559595662275192153260367
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 '121' --type 112 --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":"121"},"type":112,"part":"last20","fr":0}}'