Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| ↳ | Merges Joins the sequence of 75 (at index 2 of that sequence) - the terms below continue there. | |||
| 2 | Fully factored | 4 | 1892 | 22×11×43 |
| 3 | Fully factored | 6 | 132154 | 2×11×6007 |
| 4 | Fully factored | 7 | 1141060 | 22×5×59×967 |
| 5 | Fully factored | 8 | 98704651 | 31×43×74047 |
| 6 | Fully factored | 10 | 1357374361<10> | 7×53×293×12487 |
| 7 | Fully factored | 11 | 26706280864<11> | 25×41×1627×12511 |
| 8 | Fully factored | 12 | 737744696290<12> | 2×5×72×67×73×307831 |
| 9 | Fully factored | 13 | 6725443558…59<13> | 47×2539×3217×17519 |
| 10 | Fully factored | 15 | 1204515445…86<15> | 2×11×1148339×4767817 |
| 11 | Fully factored | 16 | 3963177569…61<16> | 13×19×1604525331…63<14> |
| 12 | Fully factored | 17 | 2453996676…55<17> | 5×179×116929×234492361 |
| 13 | Fully factored | 18 | 7873729900…18<18> | 2×441700577×891297217 |
| 14 | Fully factored | 20 | 2585544560…96<20> | 22×13×83×397×1300837×11599979 |
| 15 | Fully factored | 24 | 1786937489…49<24> | 227×2069×350677×1084965003…99<13> |
| 16 | Fully factored | 25 | 2014682756…56<25> | 23×4241×23831×1931663×1289955659<10> |
| 17 | Fully factored | 27 | 1398595305…43<27> | 73×71222479×5725070778…19<16> |
| 18 | Fully factored | 27 | 4276191949…76<27> | 26×7×17×60083×41271481×22642719857<11> |
| 19 | Fully factored | 29 | 1297967678…93<29> | 7×23371×98419×7500347×107480143633<12> |
| 20 | Fully factored | 31 | 2821646112…33<31> | 11×2548577×1006496107…39<24> |
| 21 | Composite | 32 | 3960014042…03<32> | 439×1279×7052801505…63<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 #21:
70528015059538945502896663
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 '407' --type 94 --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":"407"},"type":94,"part":"last20","fr":0}}'