They are the numbers that have more than two factors in them.
150 and 169.
6, 10, 15, 25, 30, 50, 75, 150
152, 153, 154
All even numbers greater than 2 are composite.
138, 140, 141, 142, 143, 144, 145, 146, 147, 148, 150 (including 138 and 150)
all the compounds in the world are either 50 70 115 150
Prime numbers are not composite.
Not all composite numbers are even, but all even numbers except 2 are composite.
Rectangular numbers are a subset of composite numbers. The squares of prime numbers will be composite but not rectangular.
150 is composite; 150 is even, the only even prime is 2. 150 = 2 x 3 x 5²
composite numbers are those that have more than 2 factors. all even numbers other than 2 are composite numbers and some odd numbers are composite numbers. numbers that are prime are the numbers that are not composite numbers i hope this answers your question :)