# What is Prime Factorisation? | Don't Memorise | Summary and Q&A

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December 5, 2014
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Infinity Learn NEET
What is Prime Factorisation? | Don't Memorise

## TL;DR

Prime factorization is the process of writing a number as a product of its prime factors.

## Key Insights

• #️⃣ Prime factorization involves finding the prime numbers that can multiply to give a given number.
• 🧑‍🏭 Prime numbers have only two factors: one and themselves.
• #️⃣ Factors are the numbers that can evenly divide a given number.
• #️⃣ Numbers that can be written as a product of two or more prime numbers have multiple prime factors.
• ❓ Prime factorization is useful in various mathematical computations, such as finding the greatest common divisor and simplifying fractions.
• 💻 Prime factorization is an important concept in number theory and has applications in cryptography and computer algorithms.
• #️⃣ The prime factorization of a number can be expressed using exponent notation, where the exponent represents the number of times a particular prime factor appears in the factorization.

## Transcript

what exactly is prime factorization to understand this we just need to understand two things first prime numbers and second factors let us understand factors first consider a random number say 12 to get its factors we just need to write 12 as a product of two numbers in all the possible ways it can be written as three * 4 it can also be written as ... Read More

### Q: What is prime factorization?

Prime factorization is the process of breaking down a number into its prime factors, which are numbers that can only be divided by one and themselves. It involves finding the smallest prime numbers that can multiply to give the original number.

### Q: How do you determine if a number is prime or not?

A number is prime if it can only be divided by one and itself. To determine if a number is prime, you can check if it is divisible by any numbers other than one and itself. If it is not divisible by any other numbers, it is prime.

### Q: What are factors?

Factors are the numbers that can evenly divide a given number. For example, the factors of 12 are 1, 2, 3, 4, 6, and 12, because these numbers can divide 12 without leaving a remainder.

### Q: Can a number have multiple prime factorizations?

No, a number can only have one prime factorization. The prime factorization is unique for each number, and it is obtained by finding the prime numbers that can multiply to give the original number.

## Summary & Key Takeaways

• Prime factorization involves breaking down a number into its prime factors, which are numbers that can only be divided by one and themselves.

• Factors are the numbers that can evenly divide a given number.

• Prime numbers have only two factors: one and itself.