NewScientist The Last Word - Tag 'PrimeNumbers' details

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Why is it only prime numbers? For my A-Levels I have been studying Pascals triangle, and I found that if you select any of the numbers from each prime number row, and divide this by the row number it is ALWAYS an integer. My maths teacher and I are stumped, any help would be appreciated.
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Last edited on: 2011-02-10 16:58:16

Categories: Our universe.

How can one prove that a list of prime numbers from 2 to X contains all the prime numbers in between? I can verirify that every nunber in a list is prime, but how can I prove (without recourse to an existing list - which i would have to take on faith) that no prime has been omitted?
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Categories: Technology.

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