The numbers are 13 and 41. And you do not need to know that they are prime in order to find the answer. The sum (54) and difference (28) provide all the necessary information.
47 + 7
The prime numbers 2 and 3.
23 is already prime.
Because 2 is a prime number and 2 added to any other prime number will give an odd result.
if divide the prime numbers by the compositenumber it will give you a greater number that is either a prime number or composite.
3
Two and three.
3*85
The digit prime number below 10 is 2.
There is no formula that will specifically give you a prime number and no non-prime number. Therefore, several large numbers are tested to see if they are primes, until a prime number is found.
A prime number must have exactly two factors, 1 and the number itself. 1 is not a prime because its only factor is 1.