11*19
IT IS PRIME there is no factor tree
factor tree of 216
Factor tree of 204
The common factors are: 1, 11
The factor tree of 50:5025,25,5,25025,25,5,2
21
209 is a composite number because it has factors other than 1 and itself. It is not a prime number.The 4 factors of 209 are 1, 11, 19, and 209.The factor pairs of 209 are 1 x 209 and 11 x 19.The proper factors of 209 are 1, 11, and 19 or,if the definition you are using excludes 1, they are 11 and 19.The prime factors of 209 are 11 and 19.The 2 distinct prime factors (listing each prime factor only once) of 209 are 11 and 19.The prime factorization of 209 is 11 x 19.NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.
Tackle a tree at The Hia Valley with *1 (or more) and it will drop down the tree.
83 is prime. No tree.
The prime factor tree of 280 is:140,270,2,235,2,2,27,5,2,2,2
Since the numbers 209 and 1000 share no common positive integer factors other than 1, the greatest common factor of the two numbers is 1.
Factor Tree of 20: ........20 ......../ \ .......4 5 ....../ \ .....2 2