NOT a full answer to your question, but a start, but you should be able to use any media you want if memory serves me correctly. It depends on what you are trying to claim. Usually most individuals choose organisms that are gram positive, gram negative, in addition to fungi, and spore. These four different types give a good idea of what your "product" is cabable of.
51 composite, 61 prime.
ANSWER: 61 is a prime number but 51 is a composite number.61 is a prime number because the factors of 61 are 1 and itself (61).51 is a composite number because the factors of 51 other 1 and itself (51) are 3 and 17.
51 is a composite number but 61 is a prime number
61
61 is a prime number. 49 is not a prime number as it is divisible by 7. 51 is not a prime number as it is divisible by 3.
It is: 10 plus 51 = 61
51 = 3x17
17 and 61
51 is composite.
61%
33 = 3 x 11 51 = 3 x 17 41 prime 61 prime
61, 23, 97, 41, 67 yes. 51, 93, 39, no.