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64 is the least number having exactly 7 factors: 1, 2, 4, 8, 16, 32, and 64.

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16y ago

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What is the least whole number that has exactly 7 factors including 1 and itself?

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What is the least natural number that has exactly 4 distinct odd factors?

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Why is 64 the least number that has 7 factors?

The number 64 is the least number that has exactly 7 factors because it is a perfect power of a prime, specifically (2^6). The number of factors of a number can be determined using the formula ((e_1 + 1)(e_2 + 1)...(e_n + 1)), where (e_i) are the exponents in its prime factorization. For 64, the factorization is (2^6), leading to ((6 + 1) = 7) factors. Smaller numbers either have fewer factors or do not meet the requirement of having exactly 7.


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What number has only 7 factors?

There are an infinite number of integers with "only 7 factors". Any number which is the product of exactly 7 prime numbers.


What number between 40 and 60 has exactly three factors?

All prime squares have exactly three factors.49 has exactly three factors: 1, 7, and 49.


What number has exactly 7 different prime factors?

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What is a 2-digit number with exactly 7 factors?

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Which number has exactly 7 factors?

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What number has 7 factors exactly?

Any number that is the 6th power of a prime integer.