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Why is it when you multiply two prime numbers you get a number with three or four factors?
If the two prime numbers are different: You get the two prime numbers, plus 1, plus the product. For example, if you multiply 2 x 3 = 6, the factors of 6 are 2, 3, 1, and 6. If the two prime numbers are the same: You get the prime number, 1, and the product. For example 2 x 2 = 4. The factors of 4 are 2, 1, 4.
What 4 prime numbers multiply to make 875?
They are: 5*5*5*7 = 875
What 3 prime numbers multiply to make 54?
There are 4 of them which are 2*3*3*3 = 54
What 4 prime numbers multiply to make 125?
There can only be 3 of them because as a product of its prime factors: 5*5*5 = 125
Why are there no numbers under 200 divisible by 4 prime numbers?
Because the four smallest prime numbers are 2, 3, 5, and 7. If you multiply these four together you get 210 (which makes 210 the smallest number divisible by four unique prime numbers).
What 4 prime numbers multiply to make 100?
2 x 2 x 5 x 5
What 4 prime numbers multiply to make 40?
2 x 2 x 2 x 5
What 4 prime numbers multiply to make 196?
2 x 2 x 7 x 7
What 4 prime numbers multiply to equal 154?
616
What 4 prime numbers multiply to make 441?
3 x 3 x 7 x 7
What 4 numbers multiply to make 100?
As a product of its prime factors: 2*2*5*5 = 100
What 4 different prime numbers multiply to equal 84?
336
