27^k ≡ 2 mod 2021 How would I solve this using Totients. Been racking my brain for like 2 hours and cannot make any progress what so ever
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1Factor $2021$ as the product of two small primes. Solve the problem for each prime, then use Chinese Remainder Theorem. – lulu Oct 21 '21 at 10:01
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1Welcome to MSE. For some basic information about writing mathematics at this site see, e.g., basic help on mathjax notation, mathjax tutorial and quick reference, main meta site math tutorial, and equation editing how-to. – mark Oct 21 '21 at 10:04