A semiprime, or biprime, is the product of two prime numbers. Clearly the result is not a prime number, hence the term "semi" prime.
The constituent primes of a semiprime may equal each other, so semiprimes may be squares of prime numbers. An example is the number 4 which is the product of two instances of the same prime number 2. The OEIS (Online Encyclopedia of Integer Sequences) has a listing of semiprimes.
The number 106 is a semiprime, as is 111, and 123.
The constituent primes of a semiprime may equal each other, so semiprimes may be squares of prime numbers. An example is the number 4 which is the product of two instances of the same prime number 2. The OEIS (Online Encyclopedia of Integer Sequences) has a listing of semiprimes.
The number 106 is a semiprime, as is 111, and 123.
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