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None. Prime numbers only have two factors.

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10y ago

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How many numbers are there less than thirty have exactly 6 factors?

Numbers with exactly 6 factors are perfect squares of prime numbers. The prime factorization of a number with exactly 6 factors is in the form ( p^2 ), where ( p ) is a prime number. There are 10 prime numbers less than 30: 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. So, there are 10 numbers less than 30 that have exactly 6 factors.


What is the name of a whole number that has exactly two factors?

A whole number that has exactly two factors is called a prime number. There are several examples of prime numbers, such as 3, 5, 7, 11, 13, 17, and 19. These are just a few of the thousands of prime numbers.


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91 is one of the numbers which has prime factors. 91=13 x 7. Here, 13 & 7 both are prime numbers.


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Why are 11 and 13 not prime numbers?

11 and 13 are prime numbers because they have only 2 factors which are themselves and one.


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