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The Number 666: Properties and Meanings
Prime Factors of
666=
2x
3x
3x
37.
666 is a
Triangular Number.
666 is a
223-gonal Number.
342=
666 in base
7.
666 lists in their proper order the letters used for numbers in Roman numeration system, namely D (
500) + C (
100) + L (
50) + X (
10) + V (
5) + I (
1), or DCLXVI.
666 is the sum of the squares of
two consecutive
Triangular Numbers: (
15x
15) + (
21x
21).
666 is the sum of two consecutive palindromic primes
313 +
353.
In the King James Version of the Bible, 'Revelation 13:18': "Here is wisdom: let him who hath understanding count the number of the beast: for it is the number of a man; and his number is '
six hundred three score and six'.
The Year 666 AD
The year
666 AD was at one time considered the date for the advent of the Antichrist.