The number seven is associated with the supernatural and will bring success to any project connected with it. Man lives through seven 'ages' and that major changes in a person's life occur after every seven (r nine) years. In ancient times there were thought to be seven planets. If the date of a person's birth is divisible by seven, he or she will enjoy good luck through life.
Take the time to watch Brad Meltzer's Decoded Statue of Liberty Hidden Illuminati to know the importance symbolism of the number seven.