No 291 is not a Prime number
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291 has two prime factors: 3 and 97.
composite because it has more than two factors
291 is not prime. It is at least divisible by 3 and 97. This makes it not prime since all prime numbers must only be divisible by 1 and itself.
It is 291 + 11 = 302.
Composite, because it's divisible by 3.291 is a composite number because it has more than two factors