How-many-positive-integer-multiples-of-2431-can-be-expressed-in-the-form-7-a-7-b-where-a-and-b-are-integer-such-that-0-b-a-2022-

Question Number 173830 by dragan91 last updated on 19/Jul/22

How many positive integer multiples of 2431

can be expressed in the form 7^{a} - 7^{b}

where a and b are integer such that 0 ⩽ b ⩽ a ⩽ 2022