Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 4 | 5145 | 3×5×73 |
| 1 | Fully factored | 5 | 22518 | 2×34×139 |
| 2 | Fully factored | 6 | 282802 | 2×13×73×149 |
| 3 | Fully factored | 7 | 6672873 | 3×41×54251 |
| 4 | Fully factored | 9 | 146535055 | 5×59×251×1979 |
| 5 | Fully factored | 10 | 4617172124<10> | 22×2069×557899 |
| 6 | Fully factored | 12 | 684466128370<12> | 2×5×68446612837<11> |
| 7 | Fully factored | 14 | 1394401761…34<14> | 2×7×31×139×231144409 |
| 8 | Fully factored | 16 | 5252189448…34<16> | 2×32×7×13×587×5462461439<10> |
| 9 | Fully factored | 20 | 3286039763…59<20> | 7×1283×3658879594…39<16> |
| 10 | Fully factored | 22 | 2073047531…03<22> | 107×48883×3963397499…63<15> |
| 11 | Fully factored | 23 | 3097142512…93<23> | 71×1635187×2667690332…09<15> |
| 12 | Fully factored | 24 | 3927266509…85<24> | 5×7×29×1709×73628297×3074946143<10> |
| 13 | Fully factored | 28 | 3837222931…02<28> | 2×5479×3501754819…19<24> |
| 14 | Fully factored | 29 | 3798007230…82<29> | 2×6869×46088639×5998441000…01<17> |
| 15 | Composite | 32 | 1005576821…31<32> | 1005576821…31<32> |
| ↳ | Open Open - the last known term is composite and not yet fully factored. | |||
Open end - submit a factor of the remaining composite
(32 digits) of term #15:
10055768214732336440451387921131
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 '5145' --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":"5145"},"type":104,"part":"last20","fr":0}}'