Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 5 | 38641 | 17×2273 |
| 1 | Fully factored | 5 | 59115 | 3×5×7×563 |
| 2 | Fully factored | 7 | 9900153 | 32×547×2011 |
| 3 | Fully factored | 9 | 919348589 | 613×1151×1303 |
| 4 | Fully factored | 11 | 15482211617<11> | 19×814853243 |
| 5 | Fully factored | 11 | 21186184337<11> | 9007×2352191 |
| 6 | Fully factored | 11 | 41342118023<11> | 15907×2598989 |
| 7 | Fully factored | 11 | 45679846571<11> | 4013×11382967 |
| 8 | Fully factored | 12 | 200067032005<12> | 5×197123×202987 |
| 9 | Fully factored | 13 | 2411769995…15<13> | 5×523×922282981 |
| 10 | Fully factored | 14 | 1621004568…59<14> | 3×83×65100585091<11> |
| 11 | Fully factored | 16 | 1144207883…77<16> | 3×3814026278…59<15> |
| 12 | Fully factored | 16 | 9916468324…37<16> | 412×167×1009×4007×8737 |
| 13 | Fully factored | 21 | 8337845506…77<21> | 3×11×293×482423×178749270671<12> |
| 14 | Fully factored | 24 | 9705198227…01<24> | 3×7×1811×4289×5949913047…39<16> |
| 15 | Fully factored | 28 | 1242502876…49<28> | 41×67×113×12875638669<11>×310879095211<12> |
| 16 | Composite | 32 | 2005480256…01<32> | 101×1985624016…01<30> |
| ↳ | Open Open - the last known term is composite and not yet fully factored. | |||
Open end - submit a factor of the remaining composite
(30 digits) of term #16:
198562401661876177839642841601
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 '38641' --type 76 --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":"38641"},"type":76,"part":"last20","fr":0}}'