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Are 21 28 15 17 and 28 prime numbers? - Answers

theres only one even Prime number, thats 2 prime numbers can only be divided by themselves, and 1 21, divisible by 3 or 7, so no 28 even number other than 2, so no 15, divisible by 3 or 5, so no 17 divisible only by itself and 1, so yes 28, even number, other than 2, so no



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Are 21 28 15 17 and 28 prime numbers? - Answers

https://math.answers.com/math-and-arithmetic/Are_21_28_15_17_and_28_prime_numbers

theres only one even Prime number, thats 2 prime numbers can only be divided by themselves, and 1 21, divisible by 3 or 7, so no 28 even number other than 2, so no 15, divisible by 3 or 5, so no 17 divisible only by itself and 1, so yes 28, even number, other than 2, so no



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https://math.answers.com/math-and-arithmetic/Are_21_28_15_17_and_28_prime_numbers

Are 21 28 15 17 and 28 prime numbers? - Answers

theres only one even Prime number, thats 2 prime numbers can only be divided by themselves, and 1 21, divisible by 3 or 7, so no 28 even number other than 2, so no 15, divisible by 3 or 5, so no 17 divisible only by itself and 1, so yes 28, even number, other than 2, so no

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      theres only one even Prime number, thats 2 prime numbers can only be divided by themselves, and 1 21, divisible by 3 or 7, so no 28 even number other than 2, so no 15, divisible by 3 or 5, so no 17 divisible only by itself and 1, so yes 28, even number, other than 2, so no

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