Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 3 | 783 | 33×29 |
| 1 | Fully factored | 4 | 3005 | 5×601 |
| 2 | Fully factored | 4 | 5406 | 2×3×17×53 |
| 3 | Fully factored | 7 | 1952805 | 3×5×211×617 |
| 4 | Fully factored | 8 | 90708446 | 2×953×47591 |
| 5 | Fully factored | 10 | 2655170466<10> | 2×3×13×17×19×105389 |
| 6 | Fully factored | 13 | 1800361812…23<13> | 79×2011×11332367 |
| 7 | Fully factored | 14 | 6743597651…67<14> | 1297×36791×1413221 |
| 8 | Fully factored | 17 | 3429324323…49<17> | 41×131×154643×41287933 |
| 9 | Fully factored | 20 | 3240168268…48<20> | 22×13757×5888217396…91<15> |
| 10 | Fully factored | 22 | 1573999178…72<22> | 23×2927×3055901×21996445717<11> |
| 11 | Fully factored | 25 | 1527547602…90<25> | 2×5×1597×13411×15767×452355220391<12> |
| 12 | Fully factored | 28 | 1512067004…53<28> | 59×89×19207×401119×3737629491…91<14> |
| 13 | Fully factored | 31 | 1280590570…25<31> | 52×383×6449×1729187×1199325804…81<17> |
| 14 | Fully factored | 34 | 3277909058…07<34> | 3×23×101×4703557265…03<30> |
| 15 | Composite | 35 | 7495684218…80<35> | 25×5×23×2036870711…81<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:
20368707116786231330061763306081
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 '783' --type 116 --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":"783"},"type":116,"part":"last20","fr":0}}'