members 346 (p even 106, p odd 240); failures 47 (p even 45, p odd 2)
odd-p failures: [(187, 317, 456), (207, 257, 1064)]
first even-p failures: [(30, 47, 83), (38, 55, 123), (46, 75, 119), (64, 81, 305), (68, 105, 193), (70, 99, 239), (72, 89, 377), (76, 129, 185), (80, 117, 253), (98, 115, 663), (100, 173, 237), (104, 133, 477)]
