13 , , , That was my number when I played football in high school, and has been emp no at work for over 20 years. I prefer the meanings from numerology regarding its significance. The dark side associated within Christian mythology is overshadowed by its opposite meaning. The same is true of the Norse myth attached to it. One view of numerology is you always bring the number to its lowest plane or level or 1+3=4 and the meaning of 4 is very powerful - 4 winds, 4 directions, 4 seasons and fours represent solidity, calmness, and home.