Please Login To Continue
How to Find Whether a Number is Prime or Not?
Lesson 2 of 39 • 0 upvotes • 8:45mins
Harshit Dwivedi
In this video I have discussed the method of finding whether a number is Prime or not. This method is short and crisp and requires less amount of time. In the next video I am going to tell you the proof of this method.
Number Systems - CAT Exam
39 lessons • 5h 34m
1
Introduction to Prime Numbers
9:47mins
2
How to Find Whether a Number is Prime or Not?
8:45mins
3
Proving the previous method of finding Prime Numbers
8:03mins
4
Prime Numbers Basic Question Solving
8:08mins
5
Basics of Remainders in Addition Subtraction & Multiplication
10:26mins
6
Divisibility Rule of 2, 4, 8, 16, 32 and so on
10:10mins
7
Divisibility Rule of 3 & 9
8:13mins
8
Divisibility Rule of 11
9:26mins
9
Combined Divisibility Rule of 7, 11 & 13
8:46mins
10
Divisibility Rule of 7, 11 & 13
8:49mins
11
Divisibility Rule of 17, 19 & 23
9:20mins
12
Divisibility Rule of 29, 31 & 37
8:55mins
13
Divisibility Rule of 41, 43 & 47
9:57mins
14
LCM: Division, Prime Factorisation & Multiplication Method
9:12mins
15
LCM Type One Question Solving
9:16mins
16
Understanding LCM Type 2 Concept
8:06mins
17
LCM Type 2 Question Solving
8:38mins
18
LCM Type 3 in two variables
8:02mins
19
LCM Type 3 in three Variables
8:18mins
20
LCM Question Solving
8:38mins
21
HCF/GCD Basics - Division and Prime Factorisation Method
8:02mins
22
HCF/GCD Type One Concept With Examples
8:14mins
23
HCF/GCD Type Two Concept With Examples
7:50mins
24
LCM & HCF Question Solving Part One
8:28mins
25
LCM & HCF Question Solving Part Two
8:22mins
26
LCM & HCF Question Solving Part Three
9:11mins
27
LCM & HCF Question Solving Part Four
8:28mins
28
LCM & HCF of Fractions
8:12mins
29
Concept of Successive Division
8:05mins
30
Successive Division Question Solving
8:19mins
31
Prime Factorisation and Number of Factors of a Number
8:12mins
32
Application of Totient Function to find Co-Primes Less than a Number
8:10mins
33
Sum of all Co-Primes Less than a Number
8:09mins
34
An Extension of the Application of Totient Function
8:15mins
35
How to Find the Sum of all Co-Primes by Conventional & Totient Method
8:01mins
36
Why the Finding Factors of a Number Formula Works
7:26mins
37
Odd Factors of a Number and their Sum
8:02mins
38
Even Factors of a Number and their Sum
8:03mins
39
Sum of Factors of a Number
8:02mins
Crack CAT & Other MBA Entrance Tests with Unacademy
Get subscription and access unlimited live and recorded courses from India's best educators
Structured syllabus
Daily live classes
Ask doubts
