In scientific notation each number is written in the form: b × 10 ^y, where b is a number between 1 and 10 (fractional coefficient) and y is the exponent a positive or negative whole number (an integer). Consider 6.2 x 10⁶  6.2 is the fractional coefficient and 10⁶ is the exponent.

More more information on numbers in scientific notation and standard format refer to the article on this site.