The prime number is also called prime, and there are an infinite number. A natural number greater than 1, except for 1 and itself, cannot be divisible by other natural numbers (prime numbers). In other words, the number has no other factors besides 1 and itself; otherwise it is called a composite number.
According to the basic theorem of arithmetic, each integer larger than 1 is either a prime number itself or can be written as a product of a series of prime numbers; and if the order of these prime numbers in the product is not considered, the written form is unique. The smallest prime number is 2.
So far, no formula has been found to find all prime numbers.
From: 1 to: 50
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List of prime numbers from 2 to 50
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47
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