Numbers in dreams can have both personal or symbolic significance. A number might refer to one's age, days or months that have passed since a significant event, the number of children one has, etc.
The numbers themselves can also be symbolic. Below are some numbers and some of the symbolism associated with them:
Zero - unconscious, female, completeness and hidden nature.
One - unity, beginnings, oneself, loneliness and independence.
Two - relationships, decision-making, balance, opposites and duality.
Three - creativity, a love triangle and mother-father-child threesome.
Four - strength, stability, reality, house and home, earth and physicality.
Five - the hand, the number of marriage, the five senses and the human body.
Six - symmetry, the harmony of body and spirit and the relationship between man and God.
Seven - a week, seven notes in music and cycles of life.
Eight - infinity and death.
Nine - childbirth, pregnancy, the end of one cycle and the beginning of a new one.
Ten - the union of male and female, a new start.
Twelve - a year (12 months), wholeness and a full cycle.
Thirteen - bad luck.