....x....x....x. 1000001 1100001 1010001 1110001 1001001 I II I III 1101001 1011001 P 1111001 1000101 1100101 P 1010101 1110101 P PP I 1001101 P 1101101 1011101 II 1111101 I 1000011 1100011 P P I 1010011 I 1110011 P PP P 1001011 P P 1101011 1011011 P PI P PPP 1111011 1000111 P 1100111 1010111 1110111 1001111 II 1101111 P 1011111 I P 1111111 Total irreducibles = 40 Total grid entries = 512 Percentage of irreducibles = 0.078125 Actual Probability of being primitive given irreducibility = 0.575 T&V's expected probability of being primitive given irreducibility = 0.7756143808