List of prime numbers
(3, 5), (5,  7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61) (71, 73), (101, 103), (107, 109), (137, 139), (149, 151), (179, 181), (191, 193), (197, 199), (227, 229), (239, 241), (269, 271), (281,283), (311,313), (347,349), (431,433), (461,463), (569,571), (641,643)