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Any product of 2 prime numbers will have 4 factors. Any Prime number to the 3rd power will have 4 factors.

6, 8, 10, 14, 15, 21, 22, 26, 27, 33, 34, 35, 38, 39, 46, 51, 55, 57, 58, 62, 65, 69, 74, 77, 82, 85, 86, 87, 91, 93, 94, 95

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Q: What numbers have exactly 4 factors under 100?

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60, 72, 84, 90 and 96

6 (1,2,3,6) 10 (1,2,5,10) and 15 (1,3,5,15).

180, which has 18 factors.

4, 9, 25, and 49 are all of the numbers between 1 and 100 having 3 factors.

There are exactly 50 even numbers if you include 100. There are exactly 50 odd numbers if you include 1.

Related questions

There are five numbers in that range with 12 factors, but none with exactly eleven.

16 and 81 are the only two.

By definition, a prime number has exactly two factors. So, there are no prime numbers with exactly three factors.

Each of the 25 prime numbers from 1 to 100 has exactly two factors, 1 and the number itself. The other 75 numbers from 1 to 100 are not prime numbers because none of them have exactly two factors.

numbers 1-9

4 (4,2,1) 9 (9,3,1) 25 (25,5,1) 49 (49,7,1) i think that is it...

No numbers between 1 and 100 have exactly eleven factors. 60, 72, 84, 90 and 96 each have twelve factors.

There are a lot more than three! 6 (1,2,3,6) 10 (1,2,5,10) 15 (1,3,5,15)

4, 9, 25 and 49.

In that range, only 100 has exactly 9 factors.

it's probably 60 that has 12 factors

Numbers having exactly three factors are the squares of prime numbers. Examples of these numbers greater than 100 are 121, 169, 289, 361, 529, 841, etc.

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