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Old 2018-03-02, 12:47   #7
Steve One
 
Feb 2018

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Quote:
Originally Posted by CRGreathouse View Post
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?
No! There are 210 prime numbers below 121squared on (1, 31, 61, 91 etc) 1+n30.
210 equals....(primes from 7 up to 121(7 - 113)each minus 1) multiplied together, divided by (primes 7 up to 121(7 - 113) multiplied together. Then multiplied by (121squared minus 1)/30.
This result if true but irrelevant, and higher numbers that stiil work, need explaining away as to why such huge numbers being divided and multiplied result in numbers that match desired result.
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