Is 715 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 715 is composite or not first we have to find its factors.
Contents
Factors of 715:
- If we have taken numbers from 1, 2, 3…for checking factors of 715, we found that 715 has factors 1, 5, 11, 13, 55, 65, 143 and 715. Hence, we must say that 715 is a composite number.
- Thus, 715 is the composite number.
- If we multiply 715 by 1, 2, 3 then we get the multiples of 715 which are 715, 1430 and so on.
715 is a Composite number or Prime number
About the number 715:
- 715 has more than two factors which are 1, 5, 11, 13, 55, 65, 143 and 715 and hence it is the composite number.
- 715 is the odd composite number and it is not the perfect square also.
- If we divide 715 by 1, 5, 11, 13, 55, 65, 143 and 715 then we get remainder as zero. Hence, 1, 5, 11, 13, 55, 65, 143 and 715 are the factors of 715.
Note:
- 715 is not the perfect square.
- Factors of 715: 1, 5, 11, 13, 55, 65, 143 and 715
- Prime factors of 715: 5, 11, 13
Conclusion:
- 715 is the composite number which has factors 1, 5, 11, 13, 55, 65, 143 and 715.
- And hence, 715 is not the prime number.
Multiple Choice Questions:
1) 715 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 715 are
a) 1
b) 5, 11, 13
c) 1, 55, 65, 143 and 715
d) 1, 5, 11, 13, 55, 65, 143 and 715
Ans: b) 5, 11, 13
3) 715 is the odd composite number because
a) It has factors 1, 5, 11, 13, 55, 65, 143 and 715
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c