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Posted by on Sunday, November 22, 2009 at 8:08pm.

please can you show me how the get the prime factorization of 392.
thank you

  • math - , Sunday, November 22, 2009 at 8:13pm

    The basic rule is, you need to know the divisibility tests for the first few primes, such as 2,3,5,(7,11,13).
    For 392, start by dividing by 2 until the number is odd.
    392
    =2*196
    =2*2*98
    =2*2*2*49
    Since you know 49=7*7, you would have no problem completing the prime factorization.

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