Three Days

According to Wikipedia, three is often the largest number written with the same number of strokes as the number it represents. This was true with the Romans, Chinese, and Brahmin Indians.

Three is also:

• Considered lucky in many cultures
• The centimeters of hair cut off of my head.
• The average number of movies people can name starring Charlton Heston:
  
• The Ten Commandments
• Ben-Hur
• Planet of the Apes
• The hours of conference I was able to pay full attention to.