Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 3 | 238 | 2×7×17 |
| 1 | Fully factored | 4 | 5594 | 2×2797 |
| 2 | Fully factored | 5 | 59919 | 3×19973 |
| 3 | Fully factored | 6 | 105656 | 23×47×281 |
| 4 | Fully factored | 8 | 10871037 | 33×402631 |
| 5 | Fully factored | 9 | 203128609 | 8191×24799 |
| 6 | Fully factored | 9 | 233967950 | 2×52×4679359 |
| 7 | Fully factored | 10 | 1959537004<10> | 22×43×11392657 |
| 8 | Fully factored | 12 | 299635561332<12> | 22×32×83×100279639 |
| 9 | Fully factored | 15 | 6580663875…59<15> | 32×107×683350350493<12> |
| 10 | Fully factored | 17 | 1261032388…25<17> | 52×11×4585572321…63<14> |
| 11 | Fully factored | 18 | 2671816997…09<18> | 3931×6796787070…39<14> |
| 12 | Fully factored | 19 | 1190670011…82<19> | 2×43×1384500013…37<17> |
| 13 | Fully factored | 20 | 1951567023…54<20> | 2×11×41×2163599804…27<17> |
| 14 | Fully factored | 21 | 3221856466…85<21> | 5×41×83×16631×1138559867…69<13> |
| 15 | Fully factored | 22 | 7668546740…85<22> | 5×2903×13368907×39518470417<11> |
| 16 | Fully factored | 25 | 1260436645…24<25> | 24×3×31×41×521×9277×96847×44136997 |
| 17 | Composite | 29 | 1641700411…75<29> | 52×6566801645…63<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 #17:
656680164540109315395243563
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 '238' --type 98 --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":"238"},"type":98,"part":"last20","fr":0}}'