Every even number greater than 2 is the sum of 2 primes. True or false?
This image shows the first several even numbers. Each one is expressed as the sum of two primes, some in two different ways. As far as anyone has been able to check, every even number seems to be equal to the sum of two prime numbers. Christian Goldbach conjectured that this was true in 1742, but could not prove it, and no one has been able to prove it or disprove it since. Maybe you can.