_:vb6822807 . _:vb6822805 "3 is a factor of 12, as are 2, 4 and 6."@en . "5" . _:vb6822804 . _:vb6822807 "The first thousand primes [\u2026] marched in order before him [\u2026] the complete sequence of all those numbers that possessed no factors except themselves and unity."@en . _:vb6822807 "1956, Arthur C. Clarke, The City and the Stars, page 38:"@en . . _:vb6822804 "(mathematics) Any of various objects multiplied together to form some whole."@en . _:vb6822806 "The factors of the Klein four-group are both cyclic of order 2."@en . _:vb6822805 . _:vb6822806 .