computer science

Powers of Two

• Very useful in computer science

How to remember all powers

• Memorize 2^0 --> 2^10
  • 2^0 = 1
  • 2^1 = 2
  • 2^2 = 4
  • 2^3 = 8
  • 2^4 = 16
  • 2^5 = 32
  • 2^6 = 64
  • 2^7 = 128
  • 2^8 = 256
  • 2^9 = 512
  • 2^10 = 1064 ~= 1000
• Approximate

2^10 ~= 1000

2^16 = 2^10 * 2^6 = 1000 * 64 = 64_000

2^32 = (2^10)^3 * 2^2 = 1B * 4 = 4B