I seem to remember about 4111 1111 1111 1111 times that I tested a payment system with a card that wasn’t real, although I acknowledge that when I was done con

I seem to remember about 4111 1111 1111 1111 times that I tested a payment system with a card that wasn’t real, although I acknowledge that when I was done convincing myself that I was a good programmer, I would almost always be disavowed of this notion after using a real number.