One.
16 - 9 = 7.
25 = 23 + 2
You need to factor it, into prime factors. Then, for every prime factor that appears an ODD number of times, you need to multiply 2306 by this prime factor. Multiply all such prime factors together to get your answer.
17 and 19
Square it.
One.
I might be reading this incorrectly, but it seems to me that I can take two prime numbers, 3 and 3, and make the square number nine out of them. This is also true of all the other prime numbers.
16 - 9 = 7.
25 = 23 + 2
You need to factor it, into prime factors. Then, for every prime factor that appears an ODD number of times, you need to multiply 2306 by this prime factor. Multiply all such prime factors together to get your answer.
17 and 19
You cannot make any composite number prime number because prime only has 2 factors.
If you can only make one rectangle, your number's prime. If you can make more than one, it's composite.
90 is not a prime number and you cannot make it one!
If it is composite, you can not make a number prime.
no because 1 is a square and no primes can be added to make it (1 is not prime)