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Old 2018-02-28, 17:37   #6
CRGreathouse
 
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Aug 2006

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Quote:
Originally Posted by Steve One View Post
I am saying that on the number line (1 + n30) 1, 31, 61, 91, 121 etc there are 210 prime numbers up to 121squared. This is calculated by a simple procedure that uses only lowest prime factors to negate primality. Prime(1) is 7. Prime(2) is 11 etc. The equation used is:

(Prime(1)minus 1)/Prime(1) × (Prime(2)minus 1)/Prime(2) × (Prime(3)minus 1)/Prime(3).....×(Prime(n)minus 1)/Prime(n) finally × (Prime(n)minus 1)/30
So there are exactly 210 primes up to 121 × 121, and 121 = 6/7 × 10/11 × 12/13 × 16/17 × 18/19. Is that right?

Last fiddled with by CRGreathouse on 2018-02-28 at 17:37
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