Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 5 | 20973 | 3×6991 |
| 1 | Fully factored | 5 | 53866 | 2×23×1171 |
| 2 | Fully factored | 7 | 1141796 | 22×131×2179 |
| 3 | Fully factored | 9 | 509861554 | 2×37×569×12109 |
| 4 | Fully factored | 11 | 12577262109<11> | 3×23×182279161 |
| 5 | Fully factored | 11 | 24108060411<11> | 32×2678673379<10> |
| 6 | Fully factored | 12 | 478752892129<12> | 139×3444265411<10> |
| 7 | Fully factored | 12 | 851832937286<12> | 2×131×3251270753<10> |
| 8 | Fully factored | 13 | 8432206348…78<13> | 2×32×13×36035069867<11> |
| 9 | Fully factored | 16 | 5067937646…92<16> | 23×292×653×4957×232709 |
| 10 | Fully factored | 23 | 4850501099…59<23> | 3×11×43×313×6217×1756624788…41<14> |
| 11 | Fully factored | 26 | 5009910225…16<26> | 23×47×419×83621341×3802865345…79<13> |
| 12 | Fully factored | 30 | 4736925888…04<30> | 23×7×8458796229…09<28> |
| 13 | Composite | 33 | 2961126488…34<33> | 2×32×1645070271…63<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 #13:
16450702714024516784357634416963
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 '20973' --type 42 --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":"20973"},"type":42,"part":"last20","fr":0}}'