100101001 Binary in Hex

Let's convert the binary number 100101001 to hexadecimal:

Start with the binary number you want to convert to hexadecimal. Group the binary digits into groups of four, starting from the right. If the last group has fewer than four digits, pad it with zeros on the left.

Binary: 1 0010 1001

With Zeros: 0001 0010 1001

Now, convert each group of binary digits to its hexadecimal equivalent:

00012 = 116

00102 = 216

10012 = 916

Note: In hexadecimal 10 is represented as A, 11 as B, 12 as C, 13 as D, 14 as E, and 15 as F.

Write down the hexadecimal digits obtained from each group:

Hexadecimal:129