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Yer mum
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So if n = my mum... 2(my mum) -1.... Okay I get it now. It is not prime. Thank you oh wise one. Here, a present. An envelope filled with toast.
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Mmmm! Toast! Ty
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Take any not prime number and plug it in: 14, so say 2x-1=14. 7.5 is a possible value of x, therefore it is not true.
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No survival in math class...
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No, if n = 5 2n - 1 = 9 9 is not a prime number