Two consecutive integers m and n are prime numbers. Which of the following is equal to mn ?

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The first few prime numbers are 2, 3, 5, 7, 11, 13, ... Since 2 is the only even prime number, any other prime numbers must be odd. Because consecutive integers alternate between even and odd, the only possible pair of consecutive integers that are both prime numbers is 2 and 3. Thus, m and n must be 2 and 3 in some order. Their product is: mn = 2 × 3 = 6

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