Is 389 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 389 is prime or not first we have to find its factors.
Factors of 389:
- If we have taken numbers from 1, 2, 3…for checking factors of 389, we found that 389 has factors 1 and the number 389 itself. Hence, we must say that 389 is a prime number.
- Thus, 389 is the prime number.
- Here, 389 is the odd prime number.
- If we multiply 389 by 1, 2, 3, then we get the multiples of 389 which are 389, 778, 1167…and so on.
Contents
About the number 389:
- 389has only two factors which are 1 and the number itself and hence 389 is the prime number.
- 389is the odd prime number and it is not the perfect square also.
- If we divide 389 by 1 and the number itself then we get remainder as zero. Hence, 1 and 389 are the factors of 389.
Note:
- 389 is not the perfect square.
- Factors of 389: 1 and 389
- Prime factors of 389: 389 (since, 389 is the only one prime number which is the factor of 389.)
Conclusion:
- 389is the prime number which has factors 1 and 389.
- And hence, 389 is the prime number.
Multiple Choice Questions:
1) 389 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 389 are
a) 1
b) 389
c) Both a and b
d) 0
Ans: b) 389
3) 1 is the not prime factor of 389 because
a) It is the prime number
b) 1 is neither prime nor composite number
c) Both a and b
Given statement is false
Ans: b) 1 is neither prime nor composite number