Is 403 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 403 is composite or not first we have to find its factors.
Contents
Factors of 403:
- If we have taken numbers from 1, 2, 3…for checking factors of 403, we found that 403 has factors 1, 13, 31 and 403. Hence, we must say that 403 is a composite number.
- Thus, 403 is the composite number.
- If we multiply 403 by 1, 2, 3 then we get the multiples of 403 which are 403, 806 and so on.
403 is a Composite number or Prime number
About the number 403:
- 403 has more than two factors which are 1, 13, 31 and 403 and hence it is the composite number.
- 403 is the odd composite number and it is not the perfect square also.
- If we divide 403 by 1, 13, 31 and 403 then we get remainder as zero. Hence, 1, 13, 31 and 403 are the factors of 403.
Note:
- 403 is not the perfect square.
- Factors of 403: 1, 13, 31 and 403
- Prime factors of 403: 13, 31
Conclusion:
- 403 is the composite number which has factors 1, 13, 31 and 403.
- And hence, 403 is not the prime number.
Multiple Choice Questions:
1) 403 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 403 are
a) 1
b) 13, 31
c) 1 and 403
d) 1, 13, 31 and 403
Ans: b) 13, 31
3) 403 is the odd composite number because
a) It has factors 1, 13, 31 and 403
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c