They are members of the infinite set of numbers of the form 87*k where k is an integer. Since the set is infinite, it is not possible to list them.
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87 is a composite number
87 is a composite number while 31, 59 and 41 are prime numbers.
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 87 is composite.
15, 49, 55, 87, 91,105 are the composite numbers.
87 is a composite number. This is because composite numbers are any number that has more than two factors(one and itself). Therefore, since 3 and 29 are factors of 87 that makes it a composite number.