3 and 19.
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Any number that ends with 5 is a multiple of 5.
yes 2173 is a prime number because the ending ends in 3 and you can only times 1 and 3 together to get 3 and a prime number is if 2 numbes can times 1 whole number.Actually 2173 is not a prime number. It can be divided by 1, 41, 53, or 2173. Moreover just because a number ends in 3 doesn't make it a prime number.
The factor pairs of 286 are (143,2)(26,11)(22,13) Only one number in each pair is prime.
You need to factor it, into prime factors. Then, for every prime factor that appears an ODD number of times, you need to multiply 2306 by this prime factor. Multiply all such prime factors together to get your answer.
7x53=371