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# What are the three greatest whole numbers numbers less than 150 that have an odd number of factors?

Updated: 12/9/2022

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11y ago

144, 121 and 100

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11y ago

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Q: What are the three greatest whole numbers numbers less than 150 that have an odd number of factors?
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### What are the three greatest whole numbers less than 200 such that each number has an odd number of factors?

The three greatest whole numbers less than 200 that each have an odd number of factors are 144, 169 and 196.

### Will you get the same number of factors if you multiply a prime number and itself?

Prime numbers have two factors. Prime squares have three factors. Square numbers have an odd number of factors but that number varies.

### Can an odd number have odd numbers of factors?

Yes. Square numbers have an odd number of factors. 49 has three factors.

### How do you find the greatest common divisor in three numbers?

Calculate their prime factors.

### How can you tell the next square number with only three factors?

The numbers with only three factors are squares of prime numbers.

### What are the common factors and greatest common factor of 81620?

There is no common factors or GCF for a single number. The Greatest Common Factor (GCF) is the largest factor common to two or more numbers. For example, 17 is the GCF of 34, 51, and 102 because it is the largest number that is a factor common to all three numbers.

### What are five prime numbers that have three factors and what are their similarities?

There are no prime numbers with three factors. By definition, a prime number has exactly two factors - 1 and itself.

### How do you determine if a number has 3 factors?

Squares of prime numbers have three factors.

### What has excatly 3 factors?

Squares of prime numbers are the only numbers with three factors, since there must be only one nontrivial divisor for a number to have three factors. That number must thus be prime.

### What numbers with exactly 3 factors are?

A number has exactly three factors if and only if it is the square of a prime number.

9409.

### How many 3 digit numbers have even no of factors?

878 three digit numbers have an even number of factors. Every factor of a number has a pair, so there ought to be an even number of factors for every number. However, if a pair of the factors are the same number, then there will be an odd number of factors, that is if the number is a perfect square. Assuming three digit numbers are 100 to 999: From 100 to 999, the perfect squares are 102 = 100 to 312 = 961, a total of 31-10+1 = 22 numbers. So of the 999-100+1 = 900 three digit numbers, 22 have an odd number of factors, so 900-22 = 878 have an even number of factors.