Is 558 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 558 is composite or not first we have to find its factors.
Contents
Factors of 558:
- If we have taken numbers from 1, 2, 3…for checking factors of 558, we found that 558 has factors 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279 and 558. Hence, we must say that 558 is a composite number.
- Thus, 558 is the composite umber.
- If we multiply 558 by 1, 2, 3 then we get the multiples of 558 which are 558, 1116and so on.
About the number 558:
- 558 has more than two factors which are 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279 and 558 and hence it is the composite number.
- 558 is the even composite number and it is not the perfect square also.
- If we divide 558 by 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279 and 558 then we get remainder as zero. Hence, 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279 and 558 are the factors of 558.
Note:
- 558 is not the perfect square.
- Factors of 558: 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279 and 558
- Prime factors of 558: 2, 3, 31
Conclusion:
- 558 is the composite number which has factors 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279 and 558
- And hence, 558 is not the prime number.
Multiple Choice Questions:
1) 558 is a
a) Prime number
b) Even number
c) Composite number
d) Both b and c
Ans: d) both b and c
2) The prime factors of a composite number 558 are
a) 1
b) 2, 3, 31
c) 1, 6, 9, 18, 62, 93, 186, 279 and 558
d) 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279 and 558
Ans: b) 2, 3, 31
3) 558 is the even composite number because
a) It has two factors
b) More than two factors
c) Divisible by 2
d) Both b and c
Ans: d) both b and c