View Single Post
Old 2021-01-23, 23:54   #126
Bobby Jacobs
 
Bobby Jacobs's Avatar
 
May 2018

22·53 Posts
Default

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.
Bobby Jacobs is offline   Reply With Quote