數學性質
•第150個質數。
•十進制的等數位數。
•快樂數:863 → 8²+6²+3²=109 → 1²+0²+9²=82 → 8²+2²=68→ 6²+8²=100→ 1²+0²+0²=1
倍數表
| 乘數 | 乘積 |
| 1 | 863 |
| 2 | 1,726 |
| 3 | 2,589 |
| 4 | 3,452 |
| 5 | 4,315 |
| 6 | 5,178 |
| 7 | 6,041 |
| 8 | 6,904 |
| 9 | 7,767 |
| 10 | 8,630 |
| 11 | 9,493 |
| 12 | 10,356 |
| 13 | 11,219 |
| 14 | 12,082 |
| 15 | 12,945 |
| 16 | 13,808 |
| 17 | 14,671 |
| 18 | 15,534 |
| 19 | 16,397 |
| 20 | 17,260 |
| 21 | 18,123 |
| 22 | 18,986 |
| 23 | 19,849 |
| 24 | 20,712 |
| 25 | 21,575 |
| 26 | 22,438 |
| 27 | 23,301 |
| 28 | 24,164 |
| 29 | 25,027 |
| 30 | 25,890 |
| 31 | 26,753 |
| 32 | 27,616 |
| …… | |
![863[自然數之一] 863[自然數之一]](/img/c/6ad/nBnauM3XyMTM3MjNyYTN5ATO1UTM1QDN5MjM5ADMwAjMwUzL2UzL2MzLt92YucmbvRWdo5Cd0FmLzE2LvoDc0RHa.jpg)
