Is 5 is a prime 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 5 is prime or not first we have to find its factors.
Contents
Factors of 5:
- If we have taken numbers from 1, 2, 3…for checking factors of 5, we found that 5 has factors 1 and the number 5 itself. Hence, we must say that 5 is a prime number.
- Thus, 5 is the prime number.
- Here, 5 is the odd prime number.
- If we multiply 5 by 1, 2, 3, then we get the multiples of 5 which are 5, 10, 15,…and so on.
About the number 5:
- 5 has only two factors which are 1and the number itself and hence 5 is the prime number.
- 5 is the even prime number and it is not the perfect square also.
- If we divide 5 by 1 and the number itself then we get remainder as zero. Hence, 1 and 5 are the factors of 5.
Note:
- 5 is not the perfect square.
- Factors of 5: 1 and 5
- Prime factors of 5: 5 (since, 5 is the only one prime number which is the factor of 5.)
Conclusion:
- 5 is the prime number which has factors 1 and 5.
- And hence, 5 is the prime number.
Multiple Choice Questions:
1) 5 is a
a) odd number
b) Prime number
c) Composite number
d) Both a and b
Ans: d) both a and b
2) The prime factors of a prime number 5 are
a) 1
b) 5
c) Both a and b
d) 0
Ans: b) 5
3) 1 is the not prime factor of 5 because
a) It is the prime number
b) 1 is neither prime nor composite number
c) Both a and b
d) Given statement is false
Ans: b) 1 is neither prime nor composite number