3 ms·Ha, super, thanks for making it. Check out 431 columns - this yields no obvious persistent patterns.by eps 1y agoHa, super, thanks for making it. Check out 431 columns - this yields no obvious persistent patterns.cgijoe 1y agoYou sure about that? I see some clear diagonal lines at 431 cols: https://imgur.com/a/rNKjTtr https://imgur.com/a/rNKjTtrljsprague 1y agoI think you'll find this to be the case with any prime.eps 1y agoNot really. There are almost always clearly visible diagonals. Try 199, 211, 223, etc.ljsprague 1y agoYou're right. I guess then it comes down to how far away from a composite it is.