Westonci.ca is the premier destination for reliable answers to your questions, provided by a community of experts. Experience the convenience of getting accurate answers to your questions from a dedicated community of professionals. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields.

Given a positive integer m, let Tm = {a in N | aΦ8m ≡ 1 (mod 8m), 1 ≤ a ≤ 8m}. If aΦ8m≡ 1 (mod 8m), show that (a, 8m) = 1.