2, 2 & 7 are the factors of 28
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28 is not a Prime number because it is divisible by 2, 4, 7, and 14. Prime numbers are only divisible by 1 and themselves without any other factors.
They are 23 and 5
How many numbers are in 28
No, because 28 can only be calculated as a product in the following ways: 1 x 28 2 x 14 4 x 7 In the above cases, 28, 14 and 4 are all non-prime numbers, which means that 28 cannot be a product of 2 prime numbers alone.
28 = 2x2x7
2 x 2 x 7