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4, 9, 25 and 49
They are squares of prime numbers.
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Which of the tower numbers have exactly tw factors?
All numbers that have exactly two factors are prime numbers whereas composite numbers have more than two factors.
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.
What are the numbers less than 100 that also have 11 as a factors?
11,22,33,44,55,66,77,88,99
How can you determine if the least common multiple of 2 numbers is the product of the 2 numbers or less than the product of the 2 numbers?
If the GCF of a given pair of numbers is 1, the LCM will be equal to their product. If the GCF is greater than 1, the LCM will be less than their product. Or, stated another way, if the two numbers have no common prime factors, their LCM will be their product.
What are all the numbers less than 100 that have odd proper factors?
There are 10 numbers less than 101 which have an odd number of factors: 1,4,9,16,25,36,49,64,81,100.
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 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.
How many natural numbers less than 1000 will have exactly 3 factors?
11
How many numbers less than 100 have exactly nine distinct factors?
Just 36.
How many numbers less than 10 have exactly 2 factors?
there are 3 no.2,3 & 5
How many whole numbers less than 2010 have exactly three factors?
14 (I think).
Numbers less than 10 that have exactly 2 factors?
1, 2, 3, 5, and 7
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.
Which of the tower numbers have exactly tw factors?
All numbers that have exactly two factors are prime numbers whereas composite numbers have more than two factors.
What other numbers less than fifty have exactly three prime factors?
4, 9, 25, and 49
Find all numbers less than 50 that have exactly three factors?
4, 9, 25, 49
What is special about number that are less than 50 and exactly 3 factors?
Nothing special. They are squares of prime numbers.
