Is 1236 is a composite number or not ?
- As we already know that, the number having factors 1 and the number itself is the prime number.
- And numbers having more than these two factors are the composite numbers.
- To check whether the number 1236 is composite or not first we have to find its factors.
Contents
Factors of 1236:
- If we have taken numbers from 1, 2, 3…for checking factors of 1236, we found that 1236 has factors 1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618 and 1236. Hence, we must say that 1236 is a composite number.
- Thus, 1236 is the composite number.
- If we multiply 1236 by 1, 2, 3 then we get the multiples of 1236 which are 1236, 2472 and so on.
About the number 1236:
- 1236 has more than two factors which are 1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618 and 1236 and hence it is the composite number.
- 1236 is the even composite number and it is not the perfect square also.
- If we divide 1236 by 1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618 and 1236 then we get remainder as zero. Hence, 1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618 and 1236 are the factors of 1236.
Note:
- 1236 is not the perfect square.
- Factors of 1236: 1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618 and 1236
- Prime factors of 1236: 2, 3, 103
Conclusion:
- 1236 is the composite number which has factors 1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618 and 1236
- And hence, 1236 is not the prime number.
Multiple Choice Questions:
1) 1236 is a
a) Even number
b) Not a perfect square number
c) Composite number
d) all
Ans: d) all
2) The composite factors of a composite number 1236 are
a) 4, 6, 12, 206, 309, 412, 618 and 1236
b) 2, 3, 103
c) 1, 4, 6, 12, 206, 309, 412, 618 and 1236
d) 1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618 and 1236
Ans: a) 4, 6, 12, 103, 206, 309, 412, 618 and 1236
3) 1236 is composite number because
a) It has factors 1, 2, 3, 4, 6, 12, 103, 206, 309, 412, 618 and 1236
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b