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Welcome to 2 to the negative 20th power, our post about the mathematical operation exponentiation of 2 to the power of -20.
If you have been looking for 2 to the negative twentieth power, or if you have been wondering about 2 exponent minus 20, then you also have come to the right place. 🙂
The number 2 is called the base, and the number minus 20 is called the exponent. In this post we are going to answer the question what is 2 to the negative 20th power.
Keep reading to learn everything about two to the negative twentieth power.
What is 2 to the Negative 20th Power?
2 to the negative 20th power is conventionally written as 2-20, with superscript for the exponent, but the notation using the caret symbol ^ can also be seen frequently: 2^-20.
2-20 stands for the mathematical operation exponentiation of two by the power of negative twenty.
As the exponent is a negative integer, exponentiation means the reciprocal of a repeated multiplication:
The absolute value of the exponent of the number -20, 20, denotes how many times to multiply the base (2), and the power’s minus sign stands for reciprocal.
Thus, we can answer what is 2 to the negative 20th power as
If you have come here in search of an exponentiation different to 2 to the negative twentieth power, or if you like to experiment with bases and indices, then use our calculator above.
To stick with 2 to the power of negative 20 as an example, insert 2 for the base and enter -20 as the index, aka exponent or power.
2 to the negative 20th power is an exponentiation which belongs to the category powers of 2.
Similar exponentiations on our site in this category include, but are not limited, to:
Ahead is more info related to 2 to the negative 20 power, along with instructions how to use the search form, located in the sidebar or at the bottom, to obtain a number like 2 to the power negative 20.
2 to the Power of -20
Reading all of the above, you already know most about 2 to the power of minus 20, except for its inverse which is discussed a bit further below in this section.
Using the aforementioned search form you can look up many numbers, including, for instance, 2 to the power minus 20, and you will be taken to a result page with relevant posts.
Now, we would like to show you what the inverse operation of 2 to the negative 20th power, (2-20)−1, is. The inverse is the 1 over the 20th root of 220, and the math goes as follows:
Because the index -20 is a multiple of 2, which means even, in contrast to odd numbers, the operation produces two results: (2-20)−1 =
; the positive value is the principal root.
Make sure to understand that exponentiation is not commutative, which means that 2-20 ≠ -202, and also note that (2-20)-1 ≠ 220, the inverse and reciprocal of 2-20, respectively.
You already know what 2 to the power of minus 20 equals, but you may also be interested in learning what 2 to the 20th power stands for.
Next is the summary of negative 20 power of 2.
Two to the Negative Twentieth Power
You have reached the final part of two to the negative twentieth power. Two to the negative twentieth power is the same as 2 to the power minus 20 or 2 to the minus 20 power.
Exponentiations like 2-20 make it easier to write multiplications and to conduct math operations as numbers get either big or small, such as in case of decimal fractions with lots of trailing zeroes.
If you have been looking for 2 power -20, what is 2 to the negative 20 power, 2 exponent minus 20 or 20 negative power of 2, then it’s safe to assume that you have found your answer as well.
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If you like to learn more about exponentiation, the mathematical operation conducted in 2-20, then check out the articles which you can locate in the header menu of our site.
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