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
Attic numerals the Attic system contains only additive forms. Thus, the number 4 is written ΙΙΙΙ, not ΙΠ. The numerals representing 50, 500, and 5,000 were composites of pi (often in an old form, with a short right leg) and a tiny version of the applicable power of ten. For example, 𐅆 is five times one thousand. Specific numeral symbols were used to represent one drachma, to represent talents and staters, to represent ten minas and to represent one half and one quarter. Attic numerals Attic numerals were used by the ancient Greeks, possibly from the 7th century BC. They were also