The prime factors of 289 are 17 and 17 (i.e. 289 = 17*17).
1, 17 and 289.
578
1 x 289, 17 x 17
The numbers that can divide 578 evenly are its factors. The factors of 578 are 1, 2, 289, and 578. This means 578 can be divided by these numbers without leaving a remainder.
1 x 289 = 289
1 and 36 289 and 324
289 = 17 x 17
17*17 = 289
The prime number (factor) of 289 is: 17
1, 17, 289.
289 - 256 = 33
There is no solution. For two numbers to add to an odd total, one of them must be even. If that number is also a prime it must be 2. But if one of the numbers is 2 and the two sum to 289, the other must be 287. But 287 is not a prime and the question required two primes to be added.