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Q: What prime number less than 20 can be written as the sum of four different prime numbers?

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17

Arithmetic can be written as two different products of prime numbers. haha

the prime factorization of the number

A semiprime or a prime square.

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Related questions

17

Arithmetic can be written as two different products of prime numbers. haha

the least number is 210 which is divisible by four different prime numbers.

the prime factorization of the number

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There is no such thing as THE prime number. Prime numbers are not written in any special way.

Since there are an infinite number of prime numbers, there are infinite numbers with any given number of prime factors.

A composite number. (If they are different numbers, keep in mind 1 is not a prime number)

17 = 2 + 3 + 5 + 7

A semiprime or a prime square.

Every composite number ... that is, one that is not a prime ... can be written as the product of two or more prime numbers. The primes themselves are the exceptions. A prime number is the product of only ' 1 ' and itself, and ' 1 ' is not considered a prime number.

the prime factorization