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Old 2021-01-27, 09:06   #127
SethTro
 
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"Seth"
Apr 2019

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Quote:
Originally Posted by Bobby Jacobs View Post
When d=6, the coprimes are 1 and 5, so the center is not very dense. When d=30, the coprimes are 1, 7, 11, 13, 17, 19, 23, 29, so the center is dense. When d=210, the coprimes are 1, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 121, 127, 131, 137, 139, 143, 149, 151, 157, 163, 167, 169, 173, 179, 181, 187, 191, 193, 197, 199, 209, so the center is very dense.

coprimes hides a lie with d=210 for any given m half of the coprimes will be divisible by 2, 1/3 by 3 and 1/5 by 5 so the center is still not very dense.
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