How do you write 140 as the product of its prime factors?

1 Answer
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

57
Oct 13, 2016

Answer:

#140=2xx2xx5xx7#

Explanation:

To write any number as a product of its prime factors, we should find all those prime numbers which when multiplied together form the number. Note that in such factorization, prime numbers can get repeated as well, but what is important is that

(1) all numbers are prime

(2) and their product is given number

Hence, we should divide the given number consistently by prime numbers starting with #2#, which is first prime number and continue till all factors are prime numbers.

Before we try this for given number #140#, let us list first few prime numbers, which are #{2,3,5,7,11,13,17,19,23,29,...}#

Now #140#

= #2xx70# (and as #70# can be divided by #2# again)

= #2xx2xx35#

= #2xx2xx5xx7#

As now we have all prime factors, the process is complete and prime factors of #140# are #2xx2xx5xx7#.

Was this helpful? Let the contributor know!
1500