That's what Goth 8 Crane guessed.

Goldbach conjecture in short, any even number greater than six can be expressed as the sum of two prime numbers, which is the content of conjecture.

If it's odd, then it's not a guess.

Goldbach conjecture is generally expressed by 1+ 1.

This 1 represents the number of prime factors of a number, that is, Chen Jingrun proved that 1+2, that is to say, a large even number can be expressed as the sum of two numbers, one of which is a prime number (that is, a prime number), and the other number may be a prime number or a product of two prime numbers. Together, that is to say, a big even number can be expressed as.

Scientists generally prove from two aspects, one is from 1+ 1+. . . . +1, and then gradually reduce the number of 1.

One is to start with m+n and then decrease m and n.