The number is the square root of 128 times the square root of 128 = 128
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2x2x2x2x2x2x2 equals 128. This can be calculated by multiplying 2 by itself seven times, which results in 128. This can also be expressed as 2^7, where the exponent indicates the number of times 2 is multiplied by itself.
Well, darling, if you want to know what times itself 7 times equals 128, the answer is 2. That's right, honey, 2 to the power of 7 gives you 128. So, if you're looking to impress someone with your math skills, just drop that little nugget of knowledge on them.
128 = N - 0.20N; 128 = .80N; N = 160
128
128 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.