Is 64 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 64 is composite or not first we have to find its factors.
Contents
Factors of 64:
- If we have taken numbers from 1, 2, 3…for checking factors of 64, we found that 64 has factors 1, 2, 4, 8, 16, 32 and 64. Hence, we must say that 64 is a composite number.
- Thus, 64 is the composite number.
- If we multiply 64 by 1, 2, 3 then we get the multiples of 64 which are 64, 128, and so on.
About the number 64:
- 64 has more than two factors which are 1,2, 4, 8, 16, 32and 64 and hence it is the composite number.
- 64 is the even composite number and it is the perfect square also.
- If we divide 64 by 1, 2, 4, 8, 16, 32 and 64 then we get remainder as zero. Hence, 1, 2, 4, 8, 16, 32 and 64 are the factors of 64.
Note:
- 64 is the perfect square.
- Factors of 64: 1, 2, 4, 8, 16, 32 and 64
- Prime factors of 64: 2
Conclusion:
- 64 is the composite number which has factors 1, 2, 4, 8, 16, 32and 64.
- And hence, 64 is not the prime number.
Multiple Choice Questions:
1) 64 is a
a) even number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2) The prime factors of a composite number 64 are
a) 1
b) 2
c) Both a and b
d) 641
Ans: b)2
3) 1 is the not prime factor of 64 because
a) It is the prime number
b) 1 is neither prime nor composite number
c) Both a and b
d) Given statement is false
Ans: b) 1 is neither prime nor composite number