When expressed as a surd, this is already written in its simplest form. Rounded to three decimal places, this is equal to 0.640.
0.0164
5.0833
-46
0.4
2 square root of 5
12.2
61 divided by 7 is 8 with remainder 5.
25
12
A prime number is one which cannot be evenly divided by any prime number 61 ÷ 2 = 30 +1 61 ÷ 3 = 20 +1 61 ÷ 5 = 12 +1 61 ÷ 7 = 8 + 5 As the square root of 61 lies between 7 and 8, there is no need to take the division further than this... any prime number which might have divided it would give a result lower than the number we have already tried. So, yes! 61 is a prime number.
0.5
5