They are all prime numbers,because you can only multiply them by 1.
The numbers 2, 3, 5, 7, 11, 13, 17, 19, and 23 are known as prime numbers.
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.
These numbers are significant in mathematics because they are the building blocks of the integers; every natural number greater than 1 can be expressed uniquely as a product of prime numbers, which is known as the fundamental theorem of arithmetic.
To illustrate why these numbers are prime:
The number 2 is prime because its only divisors are 1 and 2.
The number 3 is prime because its only divisors are 1 and 3.
The number 5 is prime because its only divisors are 1 and 5.
The number 7 is prime because its only divisors are 1 and 7.
The number 11 is prime because its only divisors are 1 and 11.
The number 13 is prime because its only divisors are 1 and 13.
The number 17 is prime because its only divisors are 1 and 17.
The number 19 is prime because its only divisors are 1 and 19.
The number 23 is prime because its only divisors are 1 and 23.
Any other number between 1 and 23 (except for 1, which is not considered a prime number) has additional divisors and is therefore not prime.
For example, the number 4 can be divided by 1, 2, and 4; hence, it is not prime.
Similarly, the number 6 can be divided by 1, 2, 3, and 6, so it is not prime either."
The numbers 2, 3, 5, 7, 11, 13, 17, 19, and 23 are prime numbers, meaning they have no divisors other than 1 and themselves. They are fundamental building blocks in mathematics, as every natural number greater than 1 can be expressed as a unique product of primes. Understanding prime numbers is essential for deeper mathematical concepts and number theory.
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