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By definition, a Prime number has exactly two factors. So, there are no prime numbers with exactly three factors.

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15y 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 are 3 numbers less than 50 that have exactly 2 factors?

4, 9, 25 and 49 They are squares of prime numbers.


What 3 numbers less than 50 have exactly 2 factors?

Every prime number has exactly two factors. They are '1' and the number itself. There are 15 prime numbers less than 50. A few of them are 2, 3, 5, 7, 11, 13, and 47.


How do you identify prime numbers less than 100?

Numbers can be checked to see if they are primes simply by factoring them. Every prime number has exactly two factors, 1 and the number itself. If there are more or less than 2 factors, the number is not a prime. 1 has only one factor so it is not a prime, and composite numbers have 3 or more factors.


Which numbers are not composite numbers?

Composite numbers have more than two factors. So, the numbers which have two or less than two factors are not composite numbers. Numbers which have exactly two factors are prime numbers. 1 is an exceptional case because it is neither prime nor composite since it has only one factor which is 1.


What other numbers less than fifty have exactly three prime factors?

4, 9, 25, and 49


What is special about number that are less than 50 and exactly 3 factors?

Nothing special. They are squares of prime numbers.


Which numbers less than a 100 have exactly 3 factors?

prime squares 4, 9, 25, 49


What are 2 numbers less than 50 with exactly 3 factors?

Prime squares, like 4, 9, 25 and 49


What are all the numbers that are less than 75 with exactly 3 factors?

Prime squares like 4, 9, 25, and 49.


What are all the numbers less than 100 that are the product of exactly three different prime numbers?

All the numbers less than 100 that are the product of exactly three different prime numbers are 30, 42, 66, 70, and 78.


What are all of the numbers less than 100 that are the products of exactly three different prime numbers?

All the numbers less than 100 that are the product of exactly three different prime numbers are 30, 42, 66, 70, and 78.