Mysteries :  The Official GrahamHancock.com forums
For serious discussion of the controversies, approaches and enigmas surrounding the origins and development of the human species and of human civilization. (NB: for more ‘out there’ posts we point you in the direction of the ‘Paranormal & Supernatural’ Message Board). 
Welcome! Log InRegister
In mathematics, 666 is a 'triangular number'...

A triangular number counts the objects that can form an equilateral triangle.









Quote

666 is the sum of the first 36 natural numbers (i.e. 1 + 2 + 3+ ... + 34 + 35 + 36 = 666), and thus it is a triangular number.

Since 36 is both square and triangular, 666 is the sixth number of the form n^2(n^2+1)/2 (sequence A037270 in OEIS) and the eighth number of the form n(n+1)(n^2+n+2)/8 (doubly triangular numbers) (sequence A002817 in OEIS).

The number of prime numbers up to 666 is 121, which is the square of 11, which is the number of prime numbers up to 36.

666 is an abundant number.

The harmonic mean of the decimal digits of 666 is (trivially – all repdigit natural numbers have this property) an integer: 3/(1/6 + 1/6 + 1/6) = 6, making 666 the 54th number with this property.

In base 10, 666 is a repdigit (and therefore a palindromic number) and a Smith number. A prime reciprocal magic square based on 1/149 in base 10 has a magic total of 666.

The Roman numeral for 666, DCLXVI, has exactly one occurrence of all symbols whose value is less than 1000 (D=500, C=100, L=50, X=10, V=5, I=1).

(60 and 360 were used as bases in Babylonian mathematics, as in the degrees of a circle; 360=10x36 and 666 is the sum of the numbers from 1 to 36.)

666 is 1010011010 in the binary numeral system which is the same as its one's complement in reverse digit order.

666 is a member of the indices of prime Padovan numbers: 3, 4, 5, 7, 8, 14, 19, 30, 37, 84, 128, 469, 666, 1262, 1573, 2003, 2210, ... (sequence A112882 in OEIS).

[en.wikipedia.org]

Incidentally...

If add all 36 numbers up on a roulette wheel, you get 666...






-



Post Edited (08-Jun-13 10:45)

"Music is the only sensual pleasure without vice." - Samuel Johnson (1709-1784)

Options: ReplyQuote


Subject Views Written By Posted
666 = 72 654 Cain 06-Jun-13 16:16
666 can be related to the Zodiac 602 Milo 06-Jun-13 18:34
Collectively, 666 represents the will to power and global domination 389 Milo 06-Jun-13 18:37
Re: 666 can be related to the Zodiac 384 MJT 06-Jun-13 20:02
Re: 666 can be related to the Zodiac 466 Milo 06-Jun-13 21:42
Re: 666 can be related to the Zodiac 432 WINDINWATERS 12-Jun-13 16:38
616 is an error 376 Milo 12-Jun-13 17:24
Re: 666 = 72 407 D-Archer 06-Jun-13 18:41
Re: 666 = 72 388 Poster Boy 06-Jun-13 23:51
Re: 666 = 72 311 Poster Boy 07-Jun-13 01:50
Re: 666 = 72 556 Michael MacRae 07-Jun-13 11:06
Re: 666 = 72 338 D-Archer 07-Jun-13 12:38
Re: 666 = 72 346 jamesglory 08-Jun-13 07:20
Re: 666 = 72 378 Cain 08-Jun-13 14:12
In mathematics, 666 is a 'triangular number' 6363 Milo 08-Jun-13 10:37
Re: In mathematics, 666 is a 'triangular number' 428 greengirl5 12-Jun-13 05:20
ADOBE 401 Milo 12-Jun-13 13:22
Re: 666 = 72 345 WINDINWATERS 12-Jun-13 10:42
Re: 666 = 72 324 Cain 14-Jun-13 07:14
Re: 666 = 72 395 geoffss 14-Jun-13 11:49
Re: 666 = 72 385 Broker 18-Jun-13 03:36
Re: 666 = 72 415 D-Archer 18-Jun-13 09:41
Re: 666 = 72 348 magisterchessmutt 18-Jun-13 11:49
Re: 666 = 72 445 Broker 18-Jun-13 18:40
Re: 666 = 72 342 magisterchessmutt 18-Jun-13 23:04
Re: 666 = 72 412 Broker 20-Jun-13 03:55
Re: 666 = 72 341 DUNE 20-Jun-13 08:41
Hexakosioihexekontahexa 1057 mmstud 10-Jul-13 14:17
Re: Hexakosioihexekontahexa 367 Sirfiroth 10-Jul-13 15:38
Re: Hexakosioihexekontahexa 406 mmstud 11-Jul-13 11:21
Re: Hexakosioihexekontahexa 456 Sirfiroth 11-Jul-13 20:42
Re: Hexakosioihexekontahexa 356 mmstud 12-Jul-13 09:01
Re: 666 = 72 417 mmstud 17-Jul-13 09:27
Re: 666 = 72 366 carolb 19-Jul-13 15:41
666 is not evil - it's just a symbolic number 541 Milo 19-Jul-13 15:58
Re: 666 is not evil - it's just a symbolic number 361 Michael MacRae 19-Jul-13 21:04
Re: 666 is not evil - it's just a symbolic number 423 Milo 20-Jul-13 18:39
flower power 385 Michael MacRae 21-Jul-13 22:57
Re: 666 = 72 384 mmstud 20-Jul-13 09:04
Re: 666 = 72 363 molder 20-Jul-13 09:35


Sorry, only registered users may post in this forum.