Famous Numbers

Explore well-known numbers from mathematics, curiosities, and pop culture.

• 42 - The Answer to Life
• 13 - The Unlucky Number
• 23 - The 23 Enigma
• 69 - Internet Meme Number
• 153 - Armstrong Number
• 1089 - The Magic Trick Number
• 3435 - Digit-Power Curiosity
• 495 - Kaprekar Constant (3-digit)
• 6174 - Kaprekar’s Constant
• 1729 - Hardy–Ramanujan Taxicab Number
• 5040 - Highly Composite Number
• 137 - Physics Mystery Number
• 420 - Cannabis Culture Number
• 404 - Page Not Found Number
• 1337 - Leet Number
• 144 - Fibonacci Square
• 4104 - Second Taxicab Number
• 7 - The Lucky Number
• 108 - Sacred Number
• 0 - Zero
• 1 - Unity
• 37 - Curious Number 37
• 666 - Number of the Beast
• 729 - Ramanujan’s Cube
• 1001 - Pattern Number
• 256 - Byte Number
• 1024 - Binary Kilobyte