Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 3 | 286 | 2×11×13 |
| 1 | Fully factored | 3 | 944 | 24×59 |
| ↳ | Merges Joins the sequence of 77 (at index 2 of that sequence) - the terms below continue there. | |||
| 2 | Fully factored | 5 | 15221 | 31×491 |
| 3 | Fully factored | 6 | 213120 | 27×32×5×37 |
| 4 | Fully factored | 9 | 111830978 | 2×7×79×101113 |
| 5 | Fully factored | 10 | 2127461117<10> | 59×67×337×1597 |
| 6 | Fully factored | 11 | 52906644314<11> | 2×26453322157<11> |
| 7 | Fully factored | 12 | 671828717715<12> | 3×5×53593×835717 |
| 8 | Fully factored | 14 | 2013933967…22<14> | 2×1006966983…61<14> |
| 9 | Fully factored | 15 | 2430501876…99<15> | 463×139291×3768703 |
| 10 | Fully factored | 17 | 5394154294…71<17> | 33×59×4976963×6803669 |
| 11 | Fully factored | 20 | 4807122087…31<20> | 3×112×29×41×47×2753×12497×68879 |
| 12 | Fully factored | 25 | 7092062576…38<25> | 2×179×50051×3958008962…61<18> |
| 13 | Fully factored | 26 | 9385873409…73<26> | 23×29×1407177422…19<24> |
| 14 | Fully factored | 29 | 1648433328…47<29> | 33×131×4660540935…31<25> |
| 15 | Composite | 30 | 8191277721…22<30> | 2×3×412×8121433394…27<26> |
| ↳ | Open Open - the last known term is composite and not yet fully factored. | |||
Open end - submit a factor of the remaining composite
(26 digits) of term #15:
81214333943517690848611027
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 '286' --type 104 --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":"286"},"type":104,"part":"last20","fr":0}}'