2, Prime Numbers Wiki

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2 is the first prime number. It's the only even prime number, as all larger even numbers are divisible by 2, making them composite. Furthermore, it is the only prime number that's spelled without the letter "e". — 2 can be divided by 1. — 2 can be divided by 2. Therefore it only has two factors. Every even number is divisible by 2. Therefore, the only even prime is 2 because all larger even numbers will be divisible by at least three factors - itself, 2 and 1. 2 is the only prime number without