Is 817 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 817 is composite or not first we have to find its factors.
Contents
Factors of 817:
- If we have taken numbers from 1, 2, 3…for checking factors of 817, we found that 817 has factors 1, 19, 43 and 817. Hence, we must say that 817 is a composite number.
- Thus, 817 is the composite number.
- If we multiply 817 by 1, 2, 3 then we get the multiples of 817 which are 817, 1634 and so on.
817 is a Composite number or Prime number
About the number 817:
- 817 has more than two factors which are 1, 19, 43 and 817 and hence it is the composite number.
- 817 is the odd composite number and it is not the perfect square also.
- If we divide 817 by 1, 19, 43 and 817 then we get remainder as zero. Hence, 1, 19, 43 and 817 are the factors of 817
Note:
- 817 is not the perfect square.
- Factors of 817: 1, 19, 43 and 817
- Prime factors of 817: 19, 43
Conclusion:
- 817 is the composite number which has factors 1, 19, 43 and 817.
- And hence, 817 is not the prime number.
Multiple Choice Questions:
1) 817 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 817 are
a) 1
b) 19, 43
c) 1 and 817
d) 1, 19, 43 and 817
Ans: b) 19, 43
3) 817 is the odd composite number because
a) It has factors 1, 19, 43 and 817
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c