2x2x5x7x72x2x5x7x7
The prime factorization of 980 is: 2 x 2 x 5 x 7 x 7
That's a factor string of 980; it is not the prime factorization. 4 and 49 aren't prime.
2 x 2 x 5 x 7 x 7
You can't have prime factorization without having a number to factor.
The prime factors of 980 are: 2 5 7
Prime factorisation of letters is not defined.
A prime factorization is the unique way to list any integer greater than 1 as a product of prime numbers. An example of the prime factorization of a composite number is 20=2*2*5 or 20=2^2*5. The prime factorization of a prime number is itself. e.g. 11=11.
94 = 2 * 47
5 x 7 = 35
That's an infinite list.
58=2*29; both 2 and 29 are prime, thus this is the prime factorization. In general, a prime factorization is a list of primes that comprise the number. For instance, 100: 100=2*50=2*2*25=2*2*5*5 => prime factorization is 2^2*5^2