Is 931 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 931 is composite or not first we have to find its factors.
Contents
Factors of 931:
- If we have taken numbers from 1, 2, 3…for checking factors of 931, we found that 931 has factors 1, 7, 19, 49, 133 and 931. Hence, we must say that 931 is a composite number.
- Thus, 931 is the composite number.
- If we multiply 931 by 1, 2, 3 then we get the multiples of 931 which are 931, 1862 and so on.
931 is a Composite number or Prime number
About the number 931:
- 931 has more than two factors which are 1, 7, 19, 49, 133 and 931 and hence it is the composite number.
- 931 is the odd composite number and it is not the perfect square also.
- If we divide 931 by 1, 7, 19, 49, 133 and 931 then we get remainder as zero. Hence, 1, 7, 19, 49, 133 and 931 are the factors of 931
Note:
- 931 is not the perfect square.
- Factors of 931: 1, 7, 19, 49, 133 and 931
- Prime factors of 931: 7, 19
Conclusion:
- 931 is the composite number which has factors 1, 7, 19, 49, 133 and 931.
- And hence, 931 is not the prime number.
Multiple Choice Questions:
1) 931 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 931 are
a) 1
b) 7, 19
c) 1, 49, 133 and 931
d) 1, 7, 19, 49, 133 and 931
Ans: b) 7, 19
3) 931 is the odd composite number because
a) It has factors 1, 7, 19, 49, 133 and 931
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c