show that how to prove 93 is a prime number

Hello, giriji

its simple. 93 is not a prime number because 93 is divisible by 3. To prove, any number as a prime number or vice-versa, just try to divide it from prime numbers like 2, 3, 5, 7, 11, 13, 17 etc. You can use the divisibility test too. For example, find whether 24 is a prime number.

for the solution, just use the divisibility test using prime number. Start with 2. As we know, for 2’s divisibility test, the units digit should be even. Here, in 24, the units digit which is 4 is divisible by 2. So, its not a prime number. This way you can try it with different numbers like, 10000000, 59375687549 etc. Try it, its fun.

 

thanks

regards, Yugabrat gogoi