$ ./find_xtal.pl 175k k5


    175,000 (      0) =  42,000,000 /  240  div = 2^4 * 3 * 5     
                      =  27,125,000 /  155  div = 5 * 31          
    174,935 (     65) =  27,115,000 /  155  div = 5 * 31          
    174,927 (     73) =  60,000,000 /  343  div = 7^3             
    175,141 (    141) =  31,000,000 /  177  div = 3 * 59          
    174,827 (    173) =  28,322,000 /  162  div = 2 * 3^4         
    174,825 (    175) =  50,000,000 /  286  div = 2 * 11 * 13     
    174,757 (    243) =  36,000,000 /  206  div = 2 * 103         
    174,611 (    389) =  14,318,180 /   82  div = 2 * 41          
    175,409 (    409) =  10,700,000 /   61  div = 61              
    175,438 (    438) =  20,000,000 /  114  div = 2 * 3 * 19      
                      =  30,000,000 /  171  div = 3^2 * 19        
                      =  60,000,000 /  342  div = 2 * 3^2 * 19    
                      =  50,000,000 /  285  div = 3 * 5 * 19      
    174,536 (    464) =  16,930,000 /   97  div = 97              
    175,476 (    476) =   7,370,000 /   42  div = 2 * 3 * 7