Call a super-integer an infinite sequence of decimal digits: …dn…d2d1. (Formally speaking, it is the sequence (d1,d2d1,d3d2d1,…) )Given two such super-integers …cn…c2c1 and …dn…d2d1, their product …pn…p2p1 is formed by taking pn…p2p1 to be the last n digits of the product cn…c2c1 and dn…d2d1.
Can we find two non-zero super-integers with zero product?
(a zero super-integer has all its digits zero) number theory unsolvednumber theory