8/8/2012 number-The number 11 is thought of as a "master" number in numerology because it is a double digit of the same number. When this occurs - the vibrational frequency of the prime number doubles in power. Meaning, the attributes of the Number One are doubled. Therefore, the very basic and primary understanding of the Number One is that of new beginnings and purity. When we see this digit doubled as with the 11 - then these attributes double in strength.