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In a 1742 letter to Goldbach, Euler stated: "That … every even integer is a sum of two primes, I regard as a completely certain theorem, although I cannot prove it."
Goldbach's Comet
The "comet" shows the number of ways in which each even number can be expressed as the sum of two primes
For Goldbach's conjecture to be false, there must be a zero value somewhere off to the right
credit:http://www.ltg.ed.ac.uk/~richard/goldbach.html …pic.twitter.com/m1qtJumekF
