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Squares of prime numbers, like 4, 9 and 25.
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Write 3 numbers that have exactly 2 factors?
3, 5 and 7
Is 3 a prime or composite number why?
Prime numbers have exactly two factors. 3 has exactly two factors: 1 and 3. So 3 is prime. Composite numbers have more than two factors. 4 is composite because it has three factors: 1, 2, and 4.
Numbers 1-100 that have exactly 3 FACTORS?
4, 9, 25 and 49.
What is the common factors?
All nonzero numbers have factors. Some numbers have some of the same factors as other numbers. These are known as common factors. 3 is a common factor of 9 and 12.
Is 39 a composite?
Yes. Composite numbers have more than exactly two factors; 39 has four factors: 1, 3, 13, 39. Prime numbers have exactly two factors, eg 3 has the two factors 1 and 3. Square numbers have an odd number of factors, eg 36 has nine factors: 1, 2, 3, 4, 6, 9, 12, 18, 36. The number 1 is not prime as it only has one factor: 1.
What numbers have exactly 3 factors?
All numbers that are the square of primes have exactly 3 factors.
Numbers with exactly 3 factors?
Squares of prime numbers have exactly three factors.
What do say for numbers which have exactly 3 factors?
Numbers with exactly three factors are squares of prime numbers.
Numbers with 3 factors?
The squares of all prime numbers above 2 have exactly 3 factors.
What are all the numbers less than 100 with exactly 3 factors that are prime?
By definition, a prime number has exactly two factors. So, there are no prime numbers with exactly three factors.
Numbers that have exactly 3 factors?
Prime squares
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.
What are two numbers that have exactly two factors?
2 and 3
Write 3 numbers that have exactly 2 factors?
3, 5 and 7
Is 3 a prime or composite number why?
Prime numbers have exactly two factors. 3 has exactly two factors: 1 and 3. So 3 is prime. Composite numbers have more than two factors. 4 is composite because it has three factors: 1, 2, and 4.
What are two different numbers that have exactly 3 factors?
4 and 9
3 numbers below 30 that have exactly 3 factors?
Prime squares have three factors. 4, 9, 25
