Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 4 | 1835 | 5×367 |
| 1 | Fully factored | 4 | 3012 | 22×3×251 |
| 2 | Fully factored | 6 | 585854 | 2×17×17231 |
| 3 | Fully factored | 8 | 17647214 | 2×13×678739 |
| 4 | Fully factored | 9 | 380422976 | 26×53×112153 |
| 5 | Fully factored | 10 | 7712809954<10> | 2×19×89×2280547 |
| 6 | Fully factored | 12 | 221888769129<12> | 32×17×109×13305077 |
| 7 | Fully factored | 15 | 1292292749…28<15> | 22×3×1076910624…19<14> |
| 8 | Fully factored | 17 | 4586991701…62<17> | 2×11×17×1530847×80116979 |
| 9 | Fully factored | 19 | 1265557978…18<19> | 2×72×103×1253772517…47<15> |
| 10 | Fully factored | 21 | 6155266627…71<21> | 2633×2337738939…87<18> |
| 11 | Fully factored | 22 | 1327361514…26<22> | 2×3×61×48449×7485543160…39<14> |
| 12 | Fully factored | 25 | 6927762850…36<25> | 22×3×7×11×7497578842…89<22> |
| 13 | Fully factored | 29 | 8262359442…14<29> | 2×1481×2404147×1160267189…51<20> |
| 14 | Fully factored | 32 | 4430320381…95<32> | 34×5×1093906267…59<30> |
| 15 | Composite | 34 | 1528922786…95<34> | 5×211×461×3143635383…09<28> |
| ↳ | Open Open - the last known term is composite and not yet fully factored. | |||
Open end - submit a factor of the remaining composite
(28 digits) of term #15:
3143635383186117679554191909
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 '1835' --type 108 --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":"1835"},"type":108,"part":"last20","fr":0}}'