Question

show that 571 is a prime no.

Answer 1

571 is not a prime number.

It is only having two factors that are 1 and 571.

It is not even divisible by any number less than 23.

Therefore its a prime number

Answer 2

571 is prime number.

Explanation:

To show number is prime or not first finds its factor if the factor contains any other number other than the number given and 1, then the number is prime otherwise not.  

So to find factor segment umber into parts like prime factors i.e. 1, 2 , 3 ,5 ,7…… and power them if the number is prime we get only two numbers.  

Now in case of number 571, the number is not being divided by any prime factor other than 571 itself. Therefore, number 571 is prime number.