Is 612 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 612 is composite or not first we have to find its factors.
Contents
Factors of 612:
- If we have taken numbers from 1, 2, 3…for checking factors of 612, we found that 612 has factors 1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612. Hence, we must say that 612 is a composite number.
- Thus, 612 is the composite umber.
- If we multiply 612 by 1, 2, 3 then we get the multiples of 612 which are 612, 1224 and so on.
About the number 612:
- 612 has more than two factors which are 1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612 and hence it is the composite number.
- 612 is the even composite number and it is not the perfect square also.
- If we divide 612 by 1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612 then we get remainder as zero. Hence, 1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612 are the factors of 612.
Note:
- 612 is not the perfect square.
- Factors of 612: 1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612
- Prime factors of 612: 2, 3, 17
Conclusion:
- 612 is the composite number which has factors 1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612
- And hence, 612 is not the prime number.
Multiple Choice Questions:
1) 612 is a
a) Prime number
b) odd number
c) Composite number
d) Both b and c
Ans: c) composite number
2) The non-prime factors of a composite number 612 are
a) 1
b) 2, 3, 17
c) 1, 4, 6, 9, 12, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612
d) 1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612
Ans: c) 1, 4, 6, 9, 12, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612
3) 612 is the composite number because
a) It has two factors
b) More than two factors
c) Divisible by 2
d) Both b and c
Ans: b) more than two factors