61.
Prime factorization is the finding which prime number multiply to get to make the original number. 57: 1, 3, 19, 57 Prime Factors: 3, 19 3 x 19 = 57
No 19 x 3 = 57
57 3, 19 Note: 19 is a prime number
No because 19 x 3 = 57 ...
No, it is divisible by 3 & 19
No, 57 = 3 x 19, so it's not a prime number
57 = 3 * 19It is: 3 and 19
To be sure, prime numbers are a number which cannot be divisible by every number except for itself and one. Take 5 for an example. There is no possible number which is divisible by itself except for itself and one. So, 5 is a prime number.2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 are all prime numbers to 100. Let's refresh our mind. Now, 57 has factors of 1, 3, 19, and 57. Let's remove the 57 and 1. Now, 3 and 19 are all the factors of 57.
57 is a composite number with factors 3 and 19.
The even numbers 52 and 94 can be eliminated right away because the only even prime number is 2. That leaves 11, 21, 57, and 107. 3 x 7 = 21, so it is not prime. 3 x 19 = 57, so it is not prime. 11 and 107 are the prime numbers.
3 and 19
3 and 19