3 x 5 x 7 = 105
The smallest prime factor of 105 is 3.
56 and 105
Any multiple of 105.
1 is not prime, so it can't be a prime factor.
The second one.
105 is not a prime number. If you say that 105 is a number written in base 6, it is the same as 41 in base 10, which is a prime number.
It is 5 because 15 is not a prime number, it must be a prime number like 5
As a product of its prime factors: 3*5*7 = 105
105 is not prime. 105 = 3 * 5 * 7
As a product of its prime factors: 3*5*7 = 105
105 is a composite number
Since one number is twice the other, the smaller number must be the greatest common factor. Since the greatest common factor is 7, that would make the other number 14. But, 7 is a prime number and has only one prime factor. However, the larger number, 14, has two prime factors. Also, the sum of the two numbers is 21, not 105. So, the information in the problem does not have a solution. Let us ignore the greatest common factor information. Let the smaller number be x. That means the larger number is 2x. x + 2x = 105 => 3x = 105 => x = 35. The two numbers are 35 and 70. The greatest common factor is 35. The smaller number, 35, has only two prime factors.