semi-prime

Magic Squares Using Semi-Primes

By At Right Angles | Aug 19, 2020

Wikipedia [1] defines a semi-prime as a natural number that is the product of two prime numbers. The definition allows the two primes in the product to be equal to each other, so the semi-primes include the squares of prime numbers. Displayed below are the first forty semi-primes.

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semi-prime

Magic Squares Using Semi-Primes

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