p = 13 q = 31 x that is a gap [692, 692] Length: 1 [697, 697] Length: 1 [704, 705] Length: 2 [709, 710] Length: 2 [716, 718] Length: 3 [721, 723] Length: 3 [728, 731] Length: 4 [734, 736] Length: 3 [740, 749] Length: 10 [752, 762] Length: 11