text: You can not multiply two prime numbers together and expect to get a prime number. In fact you can not multiply any 2 number of Numbers together and expect to get a prime due to the definition of a prime. A prime is a number that can be divided only by one and itself. As a result of multiplying two or more numbers together you introduce factors by definition.\n\nNow 121 times 13 = 1573 which is a case where each digit is a prime.