2 to the 40th power is conventionally written as 240, with superscript for the exponent, but the notation using the caret symbol ^ can also be seen frequently: 2^40. 109 9511627776. number or base 103 power, index, or exponent = 10 x 10 x 10 = 1,000. Writing 2 as a factor one million times would be a very time-consuming and tedious task. A better way to approach this is to use exponents. Exponential notation is an easier way to write a number as a product of many factors. Index Notation and Powers of 10. The exponent (or index or power) of a number says. how many times to use the number in a multiplication. 102 means 10 × 10 = 100. (It says 10 is used 2 times in the multiplication)
