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Numbers with three factors are squares of primes: 4, 9, 25
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What numbers with exactly 3 factors are?
A number has exactly three factors if and only if it is the square of a prime number.
A number that has exactly three factors?
A square of any prime number, p has exactly three factors. They are 1, p and p^2.
The number four has three factors What is the next number with exactly three factors?
The number 9: factors are 9, 3, and 1.
What number below 160 has exactly 3 prime factors?
30, 42, 66, 78, 102, 105, 114, 138 all have exactly three distinct prime factors.
What is a number that is less than 3 and has three factors?
The smallest number that has exactly three factors is 4.
What number between 40 and 60 has exactly three factors?
All prime squares have exactly three factors.49 has exactly three factors: 1, 7, and 49.
What number has exactly 3 prime factors?
There are an infinite number of them. 8 has three prime factors, 30 is the first with three distinct prime factors.
Which number has exactly three different prime factors?
30
What are the three numbers below 30 that have exactly 3 factors?
Numbers with three factors are squares of primes. So: 4, 9, 25
What is the least three digit number that has exactly five factors?
625
What is the smallest natural number that has exactly three factors?
4? the factors of 4 are 1,4 and 2
3 numbers below 30 that have exactly 3 factors?
Prime squares have three factors. 4, 9, 25
