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Q: What is the smallest number which has among it's factors the first five prime numbers and the first four composite numbers?

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It is 2 × 3 × 5 × 7 × 11 = 2310

4 is the smallest composite number and it is not divisible by the two given numbers.

Just multiply the first five prime numbers! 2x3x5x7x11 = 6x35x11 = 210x11 = 2310. Any multiple of this number "has the first five prime numbers as factors", but 2310 is the smallest such number.

All numbers have factors. Some factors are prime numbers, some are composite numbers. A factor that is a composite number is a composite factor.

41 is a prime number. It has no composite numbers as factors.

The answer is Composite numbers are evenly divisible by their factors.

Incorrect. Square numbers are composite and have an odd number of factors.

5 is a prime number and is not have a composite number in its factors.

Any number that has more than two factors is a composite number

To determine which number is a prime or composite number, your number must only have two factors, the number itself and one, if it more then two factors then it is a composite number.

The smallest one is 24.

composite The number 18 is a composite number. It is a composite number because composite numbers are whole numbers that have three or more factors.

A prime number is 2 factors and a composite number is 3 or more!

Just multiply the first three prime numbers together.

Prime numbers have two factors, composite numbers have more than two.

199 is a prime number; it has no composite factors.

101 is a prime number; it has no composite factors.

89 is a prime number. It has no composite factors.

The least 1 digit number that is composite is 4. It is because all numbers before that are prime.

If the number is a product of two composite numbers, it must be 16, which is the product of 4 and 4. The prime factors of 16 are 2, 2, 2, and 2. The smallest composite number is 4, so the smallest possible product of two composite numbers is 4 x 4 = 16.

By definition, composite numbers have more than two factors.

It is impossible to list the infinite number of composite odd numbers.

Six

How about: 210

The factors that are composite numbers, those that have more than two factors.