为什么我的循环在我的按钮空位内爆炸

I decided to sit down today and try and make a simple prime counter program where you enter the sub-rime of two primes and then the program tells you the multipliers used to get that product. Although it seems to crash. After process of elimination through comment out code I concluded it must be the while loop that I crashing this whole program. Does anyone have any answers to why this might be not working?I decided to sit down today and try and make a