FAST Prime Factorization (5-digit number)

If this helps you, please click LIKE and help me too. Thanks!

You can use short division repeatedly to quickly find all the prime factors of a LARGE number.

2 speed keys to fast prime factorization:
• knowing your tables
• being able to choose suitable prime divisors (rules of divisibility)

This demo takes you through my thinking through the prime factorization of 76,230.
How to choose prime divisors (rules of divisibility) 2, 3, 5 and 7 are shown and described.

Answer shown by simple factor listing (axbxb etc),
and using exponential notation.

[morgan-ihp]

i love the divisibility rule for 7: double the last digit take rest of the number all digits left of the last digit and use that to subtract your original calculation which is the last digit times two, then check to see if its a factor of 7

[NeeranjanaNatarajan]

And thats what a helpful video🦋 looks like 💕

[HarpreetKaur-nr]

Thanks for sharing the amazing methods

[dikshasahai]

Thanks a lot for the trick you gave me👍👍👍👍👍👍

[someshpatil]

Very good explanation in very short method

[sahilsharma]

I love the way to make the concept understand to students

[jitendrakumarprasad]

Maam, im an INDIAN
Im saying that 38115 is also divesible by 3
And in prime factorization method we have to take the smallest factor
So can we take 3 in place of 5 ..( please reply )
By the way your explaination is outstanding ❤

[Notgood]

What if we finding cube root or square root

[pauldunkley]

I ONLY LIKE READING INTERESTING BOOKS NOT MATH PEOPLE