There are infinitely many definitions of prime numbers, also called prime numbers. A natural number greater than 1 cannot be divisible by other natural numbers except 1 and itself, in other words, this number has no other factors except 1 and itself; Otherwise it is called a composite number.
According to fundamental theorem of arithmetic, every integer greater than 1 is either a prime number itself or a product of a series of prime numbers; If the order of these prime numbers in the product is not considered, then the writing form is unique. The smallest prime number is 2.
Prime number list 2, 3, 5, 7, 1 1, 13, 17, 19, 23, 29, 3 1, 37, 4/kloc-. 103、 107、 109、 1 13、 127、 13 1、 137、 139、 149、 15 1、 / kloc-0/57、 163、 167、 173、 179、 18 1、 19 1、 193、 197、 199、2 1 1。
What is a composite number? A composite number refers to a number in a natural number that can be divisible by other numbers except 1 and itself (except 0). In contrast, it is a prime number, and 1 is neither a prime number nor a composite number. The smallest composite number is 4. Among them, the perfect number and the number of blind dates are based on this.
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