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The product of any two numbers, neither of which is 1, is never a Prime number.

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Q: When is the product of two prime numbers not a prime number?
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Related questions

When is product of 2 prime numbers a prime number?

The product of two prime numbers is always a composite number, and it never is a prime number.


Is the product of 2 numbers a prime number?

Discounting the exception where the two numbers are 1 and some prime, products of two numbers will not result in a prime number. That results because that result, whatever it might be, will be divisible by 2, in addition to 1 and itself. And as it's divisible by two it's not a prime. So, no, in general a product of two numbers will not be a prime result. ANS.


What is a product of prime numbers?

A composite number is the product of two or more prime numbers.


Is the product of two prime numbers not a prime number?

The product of two prime numbers can never be another prime number, the numbers that you multiplied are factors of the product. (example, 9 times 5 is 45, 9 and 5 go into 45)


Is a product of two prime numbers a prime number?

No - because its factors include each of the two prime numbers.


Could the product of two prime numbers be a prime number?

No.


When is the product of two numbers a prime number?

When one of the numbers is prime and the other is 1.


How prime numbers and composite numbers related?

A composite number is the product of two or more prime numbers. A prime number has exactly two factors, 1 and the number itself; a composite number has at least one more factor than the two that a prime number has.


How do you find the LCM of 2 numbers if one number is prime?

If the second number is a multiple of the prime number, than the LCM is the second number. If the second number is not a multiple of the prime number, then the two numbers are relatively prime, and the LCM is the product of the two numbers.


What is the product of the largest single-digit prime number and the largest two-digit prime numbers?

679 is the product of the largest single-digit prime number and the largest two-digit prime number.


What one-digit number is the product of two consecutive prime numbers?

There are only two prime numbers that are consecutive numbers, 2 and 3. Their product is 2 x 3 = 6. The first prime numbers are 2, 3, 5, and 7 and the only two consecutive prime numbers whose product is a single digit are 2 and 3. (The next two consecutive prime numbers, 3 and 5, have a two-digit product.)


Is 15 a number that is a product of exactly three different prime numbers?

No. 15 is the product of two prime numbers: 3 and 5


What is the product of the greatest and least two-digit prime numbers?

The greatest two-digit prime number is 97. The lowest two-digit prime number is 11. The product of the two numbers is equal to 1067.


Is the product for any two prime numbers always odd?

No. 2 is a prime number, and any product of 2 and another prime number will be even.


Why are the multiples of any number other than one not prime numbers?

The multiples of any number cannot be prime numbers because such numbers are the product of at least two numbers. Prime numbers, but definition, cannot be cannot be the product of any numbers except itself and one.


Is the product of two prime numbers composite or prime?

The product of two prime numbers will be composite.


What number can be written as the product of two prime numbers?

A semiprime or a prime square.


Can every prime number be expressed as the product of two prime numbers?

None of them can.


Is the product of two prime numbers ever a prime number explain?

A prime number has exactly two factors, 1 and the number itself. 1 is not a prime number, and the product will be a composite number if any other prime is used as a factor and multiplied by another prime.


Are all composite numbers the product of two prime number?

No not always because composite numbers can be the product of 2 or more prime factors


What are the two prime numbers that the product is an even number?

There are an infinite amount of such numbers.


Can each of the whole numbers between 1 and 50 be written as a product of two or more prime numbers?

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.


What are the number of the two numbers of GCF is 1 and their LCM is equal to their product?

If the GCF of two numbers is 1, their LCM will be their product. Such numbers are called relatively prime, or co-prime. Any two prime numbers (like 3 and 5) will be that way, but the numbers don't have to be prime (like 4 and 9).


How can you determine from the prime factorization whether the least common multiple of two numbers is the product of the number?

If the two numbers have no common prime factors, the LCM will be the product of the numbers.


Is it possible for the sum or product of two prime numbers be a prime?

It is impossible for the product of two prime numbers to be prime. It is impossible for the sum of two prime numbers to be prime as long as one of the numbers isn't 2.