A partial proof of this law's corollary was first 
A partial proof of this law's corollary was first made in 1937  by the Soviet mathematician Ivan Vinogradov, who showed that every  natural number greater than two is equal to the sum of three prime  numbers. The main law has been proven correct up to the number  100,000, but beyond that, no verification has been found. FTP,  name this theory, which states that every even natural number is  the sum of two primes.
A partial proof of this law's corollary was first made in 1937  by the Soviet mathematician Ivan Vinogradov, who showed that every  natural number greater than two is equal to the sum of three prime  numbers.
{Goldbach Conjecture}