Find all pairs of Prime Numbers whose sum equals 999

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Prime Numbers are one of the most interesting concept in the whole of Maths. It is so interesting that there is an everlasting search for the most largest prime number in the world. This video presents a simple delightful question involving prime numbers which when solved with logical reasoning becomes infinite times more easy to solve.
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Well firstly, all primes except for the number 2 is odd, and odd+odd=even.

Which leaves 2+997

Wattsini
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Esa solución es un ejemplo de como debe ser, una mente lógica.
Felicitaciones

icems.a.
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Pretty simple & managed to solve it in less than 30 seconds

VSN
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How did you know 997 was prime and not composite? Have you memorized?

kevinstewart