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30, 42, 66, 70 and 78.
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What are all the numbers less than 100 with exactly 3 factors that are prime?
By definition, a prime number has exactly two factors. So, there are no prime numbers with exactly three factors.
What is special about numbers less than fifty that have less than three factors?
They all are prime numbers except 1
What are three prime numbers less then 30 that equal to 1955?
As a product of its prime factors: 5*17*23 = 1955
What three prime factors are less than 12?
Here are all the prime numbers less than 12: 2, 3, 5, 7, 11
What numbers are less than 200 and have the prime factors of 2 3 and 7?
42 and its next three multiples.
What other numbers less than fifty have exactly three prime factors?
4, 9, 25, and 49
What numbers would have less than two factors?
Prime numbers
What are the prime factors of the numbers from 1 to 15000?
The set of prime factors of the numbers from 1 to 15,000 would be the set of prime numbers between 1 and 15,000. The link below has a list of the first 10,000 prime numbers, so if you take the primes less than 15,000, you will have the set of prime factors of the first 15,000 numbers. For prime factors of individual numbers, check the related question, "What are the prime factors of the numbers from 1 to 200?" Also check for WikiAnswers questions in the form of "What are the prime factors of __?" and "What are the factors and prime factors of __?"
What number less than 60 has three different prime factors?
30 (2 x 3 x 5) and 42 (2 x 3 x 7) are the only numbers less than 60 having three different prime factors.
What is the sum of the three greatest prime numbers that are less than 39?
The sum of the three greatest prime numbers that are less than 39 is 97.
How many natural numbers less than 1000 have exactly three distinct positive integer divisors?
Prime squares have three factors. There are 11 of them in that range.
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.
