# Is 2 a Prime Number?

**Prime Number Posters** – Is Two a Prime Number? Interesting Fact About Prime Numbers. Ulam’s Spiral.

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**Is 2 a Prime Number?**

**a Math Wall Vocabulary Poster **

**Is 2 a Prime Number?**

Yes! 2 Is the only even prime number.

But Why?

2 can be divided by ITSELF (2) & 1 This means it has TWO DISTINCT factors (2&1)

So Two is Prime!

**Interesting Fact About Prime Numbers:**

The astronomer Carl Sagan wanted to broadcast prime numbers into space as a signal to alien life forms we exist & are intelligent.

Why do you think some people were against this idea?

**Ulam’s Spiral is really interesting:**

You might also like to have a look at these –>

– What is a prime number?

– Is 1 a prime number?

– a list of prime numbers

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