3 x 607 = 1821
2 x 3 x 3 = 18
3 x 7 = 21
Prime factorizations are expressions of numbers as products of prime factors. The prime factorization of 30 is 2 x 3 x 5.
409 is a prime number.
233357 is a prime number.
Only composite numbershave prime factorizations. Prime factorizations must consist of only prime numbers.
What a question? Perhaps: Is 1821 a prime number? 1821 is NOT a prime number. It is divisible by 3.
No.
Only integers have prime factorizations.
208 is 2x2x2x2x13
it is 2 and 3
Variables don't have prime factorizations.
23 is a prime number.
Negative numbers don't have prime factorizations.