Divisibility Rules Checker
Number
Divisibility rules are shortcuts to determine whether one number is divisible by another without performing full division. They're used in mental arithmetic, number theory, and primality testing.
- 1÷2: last digit even
- 2÷3: sum of digits divisible by 3
- 3÷4: last two digits form number divisible by 4
- 4÷5: last digit is 0 or 5
- 5÷9: sum of digits divisible by 9
360=Divisible by 2,3,4,5,6,8,9,10,12
1001=Divisible by 7 and 11 (and 13)
| Divisor | Rule |
|---|---|
| 2 | Last digit even |
| 3 | Digit sum divisible by 3 |
| 4 | Last 2 digits ÷ 4 |
| 5 | Ends in 0 or 5 |
| 6 | Divisible by 2 AND 3 |
| 9 | Digit sum divisible by 9 |
| 10 | Ends in 0 |
| 11 | Alt digit sum rule |
References
🔒
100% 무료
가입 불필요
✓
정확
검증된 공식
⚡
즉시
즉각적인 결과
📱
모바일 지원
모든 기기