But the reality has already appeared.

The number M(N)=(2)N- 1 is a prime number, and the rest are composite numbers.

In 1947, the computer found that 67 and 257 were not prime numbers.

At present, the largest number is: (M)302 1377***909525.

Determine the composite number:

1, written as the product of two numbers.

This is a huge project.

{2 to the 67th power} (2) 67-1=147573952589676412927 =193707721* 761886

This is a paper1903 < <: The factorization of large numbers is the shortest paper in academic circles so far. When Cole wrote this formula, all mathematicians were calculating with pens.

This number is the largest composite found that year. Its size: 0. 1 mm paper together = 400 million light years. It can reach the closest star to the solar system, Alpha Centauri (420 million light years); Its factorization takes two days (50 hours) on a computer with a speed of 200 billion times per second (Cray -XMP). Cole won the mathematician award that year.