English: The even integers from 4 to 50 as sums of two primes. Goldbach's conjecture is that every even integer greater than 2 can be expressed as the sum of two primes in at least one way. Pictures that show other ranges: http://commons.wikimedia.org/wiki/File:Goldbach_partitions_of_the_even_integers_from_4_to_28_300px.png, http://commons.wikimedia.org/wiki/File:Goldbach_partitions_of_the_even_integers_from_4_to_96.svg, http://commons.wikimedia.org/wiki/File:Goldbach_partitions_of_the_even_integers_from_4_to_500_rev1.svg.