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Math Help - real number problem

  1. #1
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    real number problem

    explain why 2 * 3 * 5 * 7 + 27 and 3 * 7 * 11 + 19 are composite numbers.
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  2. #2
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    Quote Originally Posted by saha.subham View Post
    explain why 2 * 3 * 5 * 7 + 27 and 3 * 7 * 11 + 19 are composite numbers.
    The first one is divisible by 3 (since both summands are).
    The second one is even (it is sum of two odd numbers).
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  3. #3
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    i have to show these numbers ae product of prime numbers but i am unable to do so because of the addition numbers
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