No. In the index form a number is expressed as a multiple of its prime factors whereas in the standard form it is expressed as a number between in the range [1, 10) multiplied by an integer power of 10.
So, for example,
1728 in index form = 26*33
1728 in standard form = 1.728*103
The index form can only be used for integers.
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In standard form it is 4.86*104. Standard form and scientific form are the same.
The way you wrote it is the standard notation. Standard notation means to write the number in its standard form. So, a number such as 150 is simply written as 150 in standard notation. The same applies to decimals.
It is the same as 4 to the power of 6 which in standard form is 4.096*10^3
Standard Form, Scientific Notation and Exponential Notation are different expressions for the same thing. When a number is expressed as a value between 1 and 10 multiplied by a power of 10 it is said to be in Standard Form (or Scientific Notation or Exponential Notation). 3.4 x 10^14 : 8.9 x 10^-4 : 1.2 x 10² are all written in standard form. 15.28 x 10³ is NOT in standard form as 15.28 is not a number between 1 and 10. When converted to 1.528 x 10^4 then it is in standard form.
The way you wrote it is the standard notation. Standard notation means to write the number in its standard form. So, a number such as 150 is simply written as 150 in standard notation. The same applies to decimals. Unless you are not in the USA, in which case Standard form (also known as "standard index form" or "scientific notation") requires a single non-zero digit before the decimal point and a multiplier of a power of 10 which gets the decimal point back to where it was in the original number. To calculated the power of the ten count how many digits the decimal point needs to move; if it needs to move to the left make it negative: 0.00105 = 1.05 × 10^-3