2

The number two (2) is the second Positive Integer and the first Prime Number. It is Even, andis the only Even Prime (the Primes other than 2 are called the Odd Primes). Thenumber 2 is also equal to its Factorial since . A quantity taken to the Power 2 is said tobe Squared. The number of times a given Binary number is divisible by 2is given by the position of the first , counting from the right. For example, is divisible by 2twice, and is divisible by 2 zero times.

• Fermat's Conjecture
• Fermat's Factorization Method
• Fermat's Last Theorem
• Fermat's Lesser Theorem
• Fermat's Little Theorem
• Fermat's Little Theorem Converse
• Fermat Spiral Inverse Curve
• Fermat's Polygonal Number Theorem
• Fermat's Primality Test
• Fermat's Problem
• Fermat's Right Triangle Theorem
• Fermat's Sigma Problem
• Fermat's Simple Theorem
• Fermat's Spiral
• Fermat's Theorem
• Fermat's Two-Square Theorem
• Fermat Sum Theorem
• Fermi-Dirac Distribution
• Fern
• Ferrari's Identity
• Ferrers Diagram
• Ferrers' Function
• Ferrier's Prime
• Feuerbach Circle
• Feuerbach Point