It's divisible by two, since the last digit is divisible by two. So it's composite.
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184 is composite. 184 = 2 * 2 * 2 * 23 = 23 * 23
184 = 23 x 23 So there are two prime numbers that go into 184: 23 and 2.
It is: 2*2*2*23 = 184
That's a prime factor.
13 is a prime number. The only prime factor of a prime number is the number itself.