Any square of a Prime number 13 or greater, like 169.
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169 is and has. The factors are 1,13, and 169. (Actually there are
four factors, but two of them are the same number ... 13.)
169
49 has exactly 3 factors (1, 7, and 49) and is greater than 40 and less than 60.
30
No. They have different number of factors
That's a prime number.