is 16 prime or composite or neither
16 is a composite number because it can be evenly divided by numbers other than 1 and itself, specifically 2, 4, and 8.
is 17 prime or composite or neither
17 is a prime number because it can only be divided evenly by 1 and itself, with no other factors.
is 18 prime or composite or neither
18 is a composite number because it can be evenly divided by numbers other than 1 and itself, specifically 2, 3, 6, and 9.
is 19 prime or composite or neither
19 is a prime number because it can only be divided evenly by 1 and itself, with no other factors.
is 20 prime or composite or neither
20 is a composite number because it can be evenly divided by numbers other than 1 and itself, specifically 2, 4, 5, and 10.
21 prime or composite or neither
21 is a composite number because it can be evenly divided by numbers other than 1 and itself, specifically 3 and 7.
