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Prime numbers are natural numbers greater than 1 not divisible by any smaller number other than 1. This tag is intended for questions about, related to, or involving prime numbers.

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It's not like that. Every positive integer(non-prime) is always a multiple of other primes smaller than that. But it doesn't mean that those will surely have 2,3,5,&7. for example you can take: …
answered Apr 2 '18 by Vicrobot