252
2x126
2x2x63
2x2x3x3x7
Two
the prime factorization
21
A factor tree of number is (I think) the numbers that multiply together to form a product. They are prime numbers, too.
It is: 2*2*11 = 44
No. By definition, the product has a proper factor - the prime.
Two
the prime factorization
1, 111, 19The GCF is 1.
21
A factor tree of number is (I think) the numbers that multiply together to form a product. They are prime numbers, too.
It is: 2*2*11 = 44
Prime numbers have one factor pair, hence one rectangle.
Every counting number(except 1) can be expressed as product of prime numbers. So 44 can be expressed as product of prime numbers: 44 = 2x2x11 = 22x11.
If the HCF (Highest Common Factor) of two numbers is 1, then the two numbers are relatively prime and their LCM is the product of the two numbers.
All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this. Example: 210 210 Divide by two. 105,2 Divide by three. 35,3,2 Divide by five. 7,5,3,2 Stop. All the factors are prime. 2 x 3 x 5 x 7 = 210 That's the prime factorization of 210.
When the numbers have a common factor (other than 1).