BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Prime Factorization & Divisibility :: Experts Please Res

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 93
Joined: Sun Jun 06, 2010 10:52 pmFollowed by: 1 member
Thanked: 2 times
by ArpanaAmishi » Mon Jul 18, 2011 10:00 pm
I have read a lot that prime factorization is useful in GMAT PS/DS section...however still couldn't figure out anything concrete...Here is my questions

1. The circumtances in which this concpet is useful
2. Factorization rules
3. Which types of problems can be attacked
4. Universal truth about the concpet

Please add if I missed anything...

Request to help me out in understanding the concept better. I hope someone will explain better than books.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3835
Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members
Location: Milpitas, CA
Thanked: 1854 times
GMAT Score:770

by Anurag@Gurome » Mon Jul 18, 2011 10:13 pm
ArpanaAmishi wrote:I have read a lot that prime factorization is useful in GMAT PS/DS section...however still couldn't figure out anything concrete...Here is my questions

1. The circumtances in which this concpet is useful
2. Factorization rules
3. Which types of problems can be attacked
4. Universal truth about the concpet

Please add if I missed anything...

Request to help me out in understanding the concept better. I hope someone will explain better than books.
1. The circumtances in which this concpet is useful: Anytime there is a question, which asks about multiples or factors. Prime factorization is also useful in questions, which does not use prime numbers.

2. Factorization rules: In order to find the prime factor of a number, break down that number's factors until only prime numbers are left.

3. Which types of problems can be attacked: See some examples:
https://www.beatthegmat.com/ps-problem-s ... tml#322262
https://www.beatthegmat.com/integers-pro ... tml#320994
https://www.beatthegmat.com/factors-t87175.html
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 93
Joined: Sun Jun 06, 2010 10:52 pmFollowed by: 1 member
Thanked: 2 times

by ArpanaAmishi » Tue Jul 19, 2011 9:20 pm
Thanks Anurag ...would you like to say something on point 4 " Universal Truth/Law/rule of prime factorization"

Last example was much more clear to me. https://www.beatthegmat.com/factors-t87175.html

Could you please post some other examples - still not so sure on usage.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3835
Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members
Location: Milpitas, CA
Thanked: 1854 times
GMAT Score:770

by Anurag@Gurome » Tue Jul 19, 2011 9:30 pm
ArpanaAmishi wrote:Thanks Anurag ...would you like to say something on point 4 " Universal Truth/Law/rule of prime factorization"

Last example was much more clear to me. https://www.beatthegmat.com/factors-t87175.html

Could you please post some other examples - still not so sure on usage.
The answer to your 4th query would be the same as for query 2: "In order to find the prime factor of a number, break down that number's factors until only prime numbers are left."

See the examples:

https://www.beatthegmat.com/number-prope ... 74863.html
https://www.beatthegmat.com/prime-number ... 85011.html
https://www.beatthegmat.com/multiples-t84819.html
https://www.beatthegmat.com/prime-t84488.html
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1