Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 2 | 70 | 2×5×7 |
| 1 | Fully factored | 4 | 1834 | 2×7×131 |
| 2 | Fully factored | 5 | 54796 | 22×7×19×103 |
| 3 | Fully factored | 8 | 42623665 | 5×7×59×20641 |
| 4 | Fully factored | 10 | 3119154240<10> | 26×3×5×1627×1997 |
| 5 | Fully factored | 14 | 3207053385…36<14> | 24×7×31×79×83×1408709 |
| 6 | Fully factored | 20 | 2202237121…71<20> | 16417×1341436999…63<16> |
| 7 | Fully factored | 21 | 2002971102…56<21> | 26×31×67×71×457×46439086091<11> |
| 8 | Composite | 26 | 1602502235…41<26> | 1602502235…41<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 #8:
16025022356444527486318541
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 '70' --type 114 --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":"70"},"type":114,"part":"last20","fr":0}}'