Question

how to find prime factors in easy method​

Answer 1

Answer:

Step-by-step explanation:

METHOD {1}  Step 1: Start by dividing the number by the first prime number 2 and continue dividing by 2 until you get a decimal or remainder. Then divide by 3, 5, 7, etc. until the only numbers left are prime numbers.  

Prime Factorization of 228

Step 2: Write the number as a product of prime numbers.

METHOD {2}

Every prime number can be written in the form of 6n + 1 or 6n – 1 (except the multiples of prime numbers, i.e. 2, 3, 5, 7, 11), where n is a natural number.

METHOD{3}

To know the prime numbers greater than 40, the below formula can be used.  

n^2 + n + 41, where n = 0, 1, 2, ….., 39

Answer 2

Answer

Step 1 = make a grid of numbers from 1 to 100.

Step 2 = cross out 1 as it is not a prime number.

Step 3 = circle 2 and cross out all the multiples of 2.

Step 4 = circle 3 and cross out all the multiples of 3.

Step 5 = circle 5 and cross out all the multiples of 5.

Step 6 = circle 7 and cross out all the multiples of 7.

Step 7 = continue the process until all the numbers are circled or crossed out.