Digital root number is the number mod 11 (Ɛ), for example, 1972 is 1 + 9 + 7 + 2 = 19 = 17 which is 1 + 7 = 8, while in decimal the root of the same number (3110) is 5; and in base 16 a digital root of a number is the number mod 15 (0xF), for example, 0x7DF is 7 + 13 + 15 = 35 = 0x23 which is 2 + 3 = 5, while in decimal the root of the same number (2015) is 8. Digital roots form an important mechanic in the visual novel adventure
Root race island called the "white island" in the middle of what was then an inland sea in what is now the Gobi desert, where they established the "City of the Bridge". (The "City of the Bridge" was constructed directly below the etheric city called Shamballa where Theosophists believe the governing deity of Earth, Sanat Kumara, dwells; thus, the ongoing evolution of the Aryan root race has been divinely guided by the being Theosophists call "The Lord of the World".) The esoteric name of the whole of the present land surface of Earth, i.e. the World Island, the Americas, the Australian continent