666 (number) on 1/149 in base 10 has a magic total of 666. The prime factorization of 666 is 2 • 3 • 37. Also, 666 is the sum of squares of first seven primes: formula_2 The Roman numeral for 666, DCLXVI, has exactly one occurrence of all symbols whose value is less than 1000 in decreasing order (D = 500, C = 100, L = 50, X = 10, V = 5, I = 1). In the Textus Receptus manuscripts of the New Testament, the Book of Revelation () cryptically asserts 666 to be "man's number" or "the number of a
Muisca numerals "foot one", twelve: "foot two", etc. As in the other pre-Columbian civilizations, the number 20 was special. It was the total number of all body extremities; fingers and toes. The Muisca used two forms to express twenty: "foot ten"; "quihícha ubchihica" or their exclusive word "gueta", derived from "gue", which means "house". Numbers between 20 and 30 were counted "gueta asaqui ata" ("twenty plus one"; 21), "gueta asaqui ubchihica" ("twenty plus ten"; 30). Larger numbers were counted as multiples of twenty; "gue-bosa" ("20 times 2"; 40), "gue-hisca" ("20 times 5"; 100). Muisca numerals Muisca numerals were the numeric notation system