# What number has exactly 3 prime factors?

## What number has exactly 3 prime factors?

As it turns out, the only positive integers with exactly three factors are the squares of primes. For instance, the factors of 9 are 1, 3, and 9, and the factors of 49 are 1, 7, and 49.

### Are 3 and 10 a prime number?

The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29. There are 25 prime numbers between 1 and 100. Prime numbers can continue well past 100.

What are the prime factors less than 10?

There are four prime numbers that are less than 10, and those are 2, 3, 5, and 7.

How many numbers less than 100 will have exactly 3 factors?

Answer: The numbers 4, 9, 25, 49 only has 3 factors exactly below 100.

## Is 3 a prime factor?

A prime number is an integer, or whole number, that has only two factors — 1 and itself. Put another way, a prime number can be divided evenly only by 1 and by itself. Prime numbers also must be greater than 1. For example, 3 is a prime number, because 3 cannot be divided evenly by any number except for 1 and 3.

### What is the greatest prime factor between 1 and 30?

The greatest prime number between 1 and 30 is 29 .

Is 3 a prime number Yes or no?

The first five prime numbers: 2, 3, 5, 7 and 11. A prime number is an integer, or whole number, that has only two factors — 1 and itself. For example, 3 is a prime number, because 3 cannot be divided evenly by any number except for 1 and 3. However, 6 is not a prime number, because it can be divided evenly by 2 or 3.

What are the all factors of 10?

The factors of 10 are 1, 2, 5, 10 and its negative factors are -1, -2, -5, -10.

## What are the numbers between 1 and 100 having exactly 3 factors?

We know that the numbers between 1 and 100 which have exactly three factors are 4, 9, 25 and 49.

### What are 3 numbers that have exactly 4 factors?

Some examples of numbers with exactly four factors are 6, 15, and 21. For 6, the factors are 1, 2, 3, and 6, and for 15, the factors are 1, 3, 5, and 15. Similarly, for 21, the factors are 1, 3, 7, and 21.

What is the greatest prime factor of 77?

Factors of 77

• Factors of 77: 1, 7, 11 and 77.
• Prime Factorization of 77: 77 = 7 × 11.

Which is a prime number with more than two factors?

The number 15 has more than two factors: 1, 3, 5, and 15. Hence, it is a composite number. On the other hand, 13 has just two factors: 1 and 13. Hence, it is a prime number.

## Which is the smallest prime number greater than 1?

Numbers greater than 1 having at least three factors. 2 is the smallest and the only even prime number. 4 is the smallest composite number. Examples of prime numbers are 2, 3, 5, 7, 11, 13, etc. Examples of composite numbers are 4, 6, 8, 9, 10, etc.

### Is there a limit to the number of prime numbers?

For the first 5000 prime numbers, this calculator indicates the index of the prime number. The nth prime number is denoted as Prime [n], so Prime [1] = 2, Prime [2] = 3, Prime [3] = 5, and so on. The limit on the input number to factor is less than 10,000,000,000,000 (less than 10 trillion or a maximum of 13 digits).

Which is the only even prime number in the world?

We know that 2 is the only even prime number. And only two consecutive natural numbers which are prime are 2 and 3. Apart from those, every prime number can be written in the form of 6n + 1 or 6n – 1 (except the multiples of prime numbers, i.e. 2, 3, 5, 7, 11), where n is a natural number. For example: 6(1) – 1 = 5 6(1) + 1 = 7 6(2) – 1 = 11