The question is confusing.

Main post link -> https://brilliant.org/assessment/kt/solvable_component/fundamental-theorem-of-arithmetic-prime-factors/2113632/

How many positive integers less than or equal to 500 have exactly 3 positive divisors? They say the answer is [answer deleted], but do all the positive prime numbers less than 500 have 3 positive divisors? I got confuse with their answer.

Easy Math Editor

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Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$