Prime numbers refer to natural numbers containing only two factors (i e  they can only be divided by themselves and 1)  Twin prime numbers refer to two prime numbers with a difference of 2  For example, 3 and 5, 17 and 19  The so-called twin prime number conjecture was put forward by Euclid, a Greek mathematician, which means that there are infinite pairs of twin prime numbers  This topic has not been proved  Recently, the latest research of a Chinese lecturer in the United States shows that, Although it cannot be proved that there are infinite prime pairs with a difference of 2, there are infinite prime pairs with a difference of less than 70 million
This is the first time that it has been formally proved that there are infinite groups of prime pairs whose spacing is less than a fixed value
 It is believed that if this result is true, it will be a major breakthrough in the development of number theory