Goldbach's conjecture

In mathematics, Goldbach's conjecture is one of the oldest unsolved problems in number theory and in all of mathematics. It states:

Related Topics:
Unsolved problem - Number theory - Mathematics

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:Every even integer greater than 2 can be written as the sum of two primes. (The same prime may be used twice.)

Related Topics:
Even - Integer - Primes

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For example,

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:  4 = 2 + 2

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:  6 = 3 + 3

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:  8 = 3 + 5

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:10 = 3 + 7 = 5 + 5

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:12 = 5 + 7

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:14 = 3 + 11 = 7 + 7

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:etc.

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