Write 825 as a product of its prime factors.

Prime factors are numbers that can only be fully divided by itself and 1.

For example, 2, 3 and 5 are prime numbers since they can only be divided by itself and 1. However, 6 is not a prime number because it can also be divided by 2 and 3.

Is it easy to see that 825 can be divided by 5 (a prime number). Doing this gives us 165.

Once again, 165 can be divided by 5! The result is 33.

33 can be divided by 3, giving us a quotient of 11.

11 can not be divided by any integer other than itself and 1, and so is a prime number in itself.

Therefore, 825 can be expressed as 1155*3 or, in a simplified format, 11 * 5^2 * 3

EV
Answered by Ewan V. Maths tutor

20060 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Given the points (6,6) and (10,8) calculate the gradient of the line passing through them and the point at which it intersects the y-axis?


A school has a number of students. One is chosen at random; the probability that the student is female is 2/5. Knowing that there are 174 male students, work out the total number of students in the school.


Expand and simplify (5x – 2y)(3x – 4y)


Point A (-3,5) and point B (1,-15) are to be connected to form a straight line, fing the equation of the line in the form y=mx+c?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning