Question

what is formal little theorem in mathematics?
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Answer 1

Answer:

Fermat's little theorem states that if p is a prime number, then for any integer a, the number aᵖ − a is an integer multiple of p. In the notation of modular arithmetic, this is expressed as a^p \equiv a \pmod p. For example, if a = 2 and p = 7, then 2⁷ = 128, and 128 − 2 = 126 = 7 × 18 is an integer multiple of 7.