Is 531 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 531 is composite or not first we have to find its factors.
Contents
Factors of 531:
- If we have taken numbers from 1, 2, 3…for checking factors of 531, we found that 531 has factors 1, 3, 9, 59, 177 and 531. Hence, we must say that 531 is a composite number.
- Thus, 531 is the composite number.
- If we multiply 531 by 1, 2, 3 then we get the multiples of 531 which are 531, 1062 and so on.
531 is a Composite number or Prime number
About the number 531:
- 531 has more than two factors which are 1, 3, 9, 59, 177 and 531 and hence it is the composite number.
- 531 is the odd composite number and it is not the perfect square also.
- If we divide 531 by 1, 3, 9, 59, 177 and 531 then we get remainder as zero. Hence, 1, 3, 9, 59, 177 and 531 are the factors of 531.
Note:
- 531 is not the perfect square.
- Factors of 531: 1, 3, 9, 59, 177 and 531
- Prime factors of 531: 3, 59
Conclusion:
- 531 is the composite number which has factors 1, 3, 9, 59, 177 and 531.
- And hence, 531 is not the prime number.
Multiple Choice Questions:
1) 531 is a
a) odd 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 531 are
a) 1
b) 3, 59
c) 1, 9, 177 and 531
d) 1, 3, 9, 59, 177 and 531
Ans: b) 3, 59
3) 531 is the odd composite number because
a) It has factors 1, 3, 9, 59, 177 and 531
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c