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The prime factorization of a whole number less than 100 is the product of at most __ primes ( not necessarily different ).

 Jan 20, 2019
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\(\text{the smallest number we'll get is by using just the prime number }2 \text{ as a factor}\\ 2^6 = 64<100,~2^7 = 128 > 100\\ \text{so a whole number }<100 \text{ will have at most }6 \text{ non-unique prime factors}\)

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 Jan 20, 2019

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