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5 and 2 are the only prime numbers that end in a 5 or 2. A prime number is by definition only divisible by 1 and itself, and all other whole numbers ending in 5 or 2 are divisible by 5 or 2, respectively. Numbers that are not whole numbers cannot be prime.

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โˆ™ 2014-10-14 16:37:51
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โˆ™ 2012-05-07 13:20:59

2 and 5 are the only prime numbers that end in 2 or 5.

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Q: What prime numbers end in a 2 or 5?
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