For cygwin, ie Windows, operation please download the 3 dlls.
To run Primemx2, follow the input syntax exemplified in 'm25964951.txt', by:
eg, "Primemx2 < m25964951.txt"
 or "Primemx2" followed by similar input from Stdin

To run Primemmx2, follow the input syntax exemplified in 'mm127.txt', by:
eg, "Primemmx2 < mm127.txt"
 or "Primemmx2" followed by similar input from Stdin