You are confused #7
Number Theory
Level
1
Which is the smallest prime number from the given choices?
-2
9
3
-1
0
2
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1 solution
A prime number must have exactly two factors (1 and itself). Therefore, the number 2 is the lowest prime number as its only common divisors are 1 and 2. The number 1 only has 1 common divisor so it cannot be a prime number.