13 is often considered an unlucky number, while 7 is often thought of as lucky. Let's have them fight it out on a finite field of battle! On your left is 13, fighting for bad. On your right is 7, fighting for good!
C583B43A14152 - 34C583B43B6B718 (mod 1616 + 162 * 133 - 1)
28013267695A0 * 72C288722CC39856304B2 (mod 1616 + 33 * 16 * 23 + 1)
BCAC097587CA0 / 73A8163C68668849 (mod 1616 + 162 * 33 * 10 - 3)
sqrt(2AC20A9942A9A) (mod 1616 + 33 * 16 * 52 + 3)
You can validate your puzzle solution with certitude.