PBS
Why Quantum Computing Requires Quantum Cryptography
Quantum computing is cool, but you know what would be extra awesome - a quantum internet. In fact if we want the first we’ll need the latter. And the first step to the quantum internet is quantum cryptography.
PBS
Hacking at Quantum Speed with Shor's Algorithm
Classical computers struggle to crack modern encryption. But quantum computers using Shor's Algorithm make short work of RSA cryptography. Find out how.
3Blue1Brown
Pi hiding in prime regularities
A beutiful derivation of a formula for pi. At first, 1-1/3+1/5-1/7+1/9-.... seems unrelated to circles, but in fact there is a circle hiding here, as well as some interesting facts about prime numbers in the context of complex numbers.
3Blue1Brown
Pi hiding in prime regularities
A beutiful derivation of a formula for pi. At first, 1-1/3+1/5-1/7+1/9-.... seems unrelated to circles, but in fact there is a circle hiding here, as well as some interesting facts about prime numbers in the context of complex numbers.
3Blue1Brown
Why do prime numbers make these spirals?
A curious pattern in polar plots with prime numbers, together with discussion of Dirichlet's theorem
PBS
How to Break Cryptography
Only 4 steps stand between you and the secrets hidden behind RSA cryptography. Find out how to crack the world's most commonly used form of encryption.
Curated Video
Finding the Prime Factors of a Number
This video explains how to find the prime factors of a number using the factor tree method, as well as how to write prime factors in index form. Practice questions and answers are at the end of the video.
Curated Video
Finding the Lowest Common Multiple (LCM)
This video explains how to find the lowest common multiple (LCM) of two or more numbers, using two methods: listing the multiples and using prime factorisation. Practice questions and answers are at the end of the video.
Curated Video
How to Use Prime Factor Trees to find Prime Factors #5
This video covers how to find the prime factors of a number by using a prime factor tree. This process is sometimes called prime factorisation. Suitable for courses across the world, including all KS3 and GCSE courses in the UK.
Curated Video
How to find the Lowest Common Multiple (LCM) #6
This video covers how to find the "Lowest Common Multiple" of a group of numbers. We cover 2 methods. The first is the easier method, which involves listing out the multiples of each number and picking the lowest multiple in common. The...
Curated Video
How to find the Highest Common Factor #7
This video covers how to find the "Highest Common Factor" of a group of numbers. We cover 2 methods. The first is the easier method, which involves listing out the factors of each number and picking the highest factor shared by all the...
FuseSchool
Types Of Numbers
We all know what numbers are 1, 2, 3, 4, 5, …. Including negative numbers -1, -2, -3, -4, -5, ... But did you know that mathematicians classify numbers into different types… into a number system. Let’s start at the top with real numbers....
Why U
Pre-Algebra 10 - Factoring
Any natural number can be decomposed into a product of prime factors. Prime factorization is fundamental to many arithmetic operations involving fractions.
Brian McLogan
Using Square Numbers to Simplify Radicals, Root(40)
👉 Learn how to find the square root of a number. To find the square root of a number, we identify whether that number which we want to find its square root is a perfect square. This is done by identifying a number which when raised to...
Brian McLogan
Simplifying the square root of a square number and exponent
👉 Learn how to simplify the square root of an expression. The square root of an expression is an expression which will multiply itself twice to give the original expression. To simplify the square root of an expression, we...
Curated Video
GCSE Secondary Maths Age 13-17 - Number: Prime Factors - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
Curated Video
GCSE Secondary Maths Age 13-17 - Number: Prime Factors - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow steps. This video...
KnowMo
How to Find the Highest Common Factor: Prime Factor Decomposition Method
This video is a lecture on the topic of the highest common factor (HCF). The presenter discusses what HCF is and how it is applied to a pair or set of numbers. They provide examples of finding the HCF of two numbers by listing their...
Curated Video
Simplifying Square Roots of Negative Numbers with Imaginary Unit i
In this video lesson, students will learn how to write the square root of a negative number using the imaginary unit i. The lesson explains the difference between real and imaginary numbers and demonstrates how to simplify square roots...
FuseSchool
Factors & Multiples
Factors & Multiples | Number | Maths | FuseSchool In this video we are going to look at factors and multiples. Multiples are the timestables of a number. What we get by multiplying that number. The multiples of 3 are 3, 6, 9, 12, 15, and...
Brian McLogan
What are Prime numbers and provide examples
👉 Learn how to factor a number, variable, and monomial completely. To factor means to write our term as a product of its factors. Therefore we will learn how to break down a number, variable, and monomial into its factors.
KnowMo
Finding the Lowest Common Multiple
This video is a lecture on the topic of the lowest common multiple (LCM) in mathematics. The video explains what the LCM is and how to calculate it for a pair of numbers. The process of prime factor decomposition is discussed as the...
Brian McLogan
Learn how to simplify a radical expression with variables and a number
👉 Learn how to simplify the square root of an expression. The square root of an expression is an expression which will multiply itself twice to give the original expression. To simplify the square root of an expression, we...