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

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach Starts Oct 17
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Chris Peckover, 100th-Percentile GMAT Scorer

Oct 17 · Chris Peckover
Sat · 11:00 AM to 2:00 PM ET
Oct 20 · Chris Peckover
Tue, Thu · 8:00 to 10:00 PM ET
Oct 25 · Josh Braslow
Sun · 1:00 to 4:00 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemand 5 seats left Start anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

prime factor of 899 is x

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members
Location: India
Thanked: 267 times
GMAT Score:760
by sanju09 » Tue Jul 27, 2010 12:53 am
The smallest prime factor of 899 is x. Which of the following is true of x?
a. 1 < x ≤ 7
b. 7 < x ≤ 14
c. 14 < x ≤ 21
d. 21 < x ≤ 28
e. 28 < x ≤ 35

[spoiler]Source: Manhattan GMAT Challenge Problem of the Week - 25 May 2010[/spoiler]
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Legendary Member
Posts: 2326
Joined: Mon Jul 28, 2008 3:54 amFollowed by: 2 members
Thanked: 173 times
GMAT Score:710

by gmatmachoman » Tue Jul 27, 2010 1:23 am
sanju09 wrote:The smallest prime factor of 899 is x. Which of the following is true of x?
a. 1 < x ≤ 7
b. 7 < x ≤ 14
c. 14 < x ≤ 21
d. 21 < x ≤ 28
e. 28 < x ≤ 35

[spoiler]Source: Manhattan GMAT Challenge Problem of the Week - 25 May 2010[/spoiler]
899 = 29 *31

Pick E
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members
Location: India
Thanked: 267 times
GMAT Score:760

by sanju09 » Tue Jul 27, 2010 1:30 am
gmatmachoman wrote:
sanju09 wrote:The smallest prime factor of 899 is x. Which of the following is true of x?
a. 1 < x ≤ 7
b. 7 < x ≤ 14
c. 14 < x ≤ 21
d. 21 < x ≤ 28
e. 28 < x ≤ 35

[spoiler]Source: Manhattan GMAT Challenge Problem of the Week - 25 May 2010[/spoiler]
899 = 29 *31

Pick E
Hi Govind,

How quickly can one identify that 899 is not divisible by a prime less than 29? Would you suggest "trial and error" way or what went through your mind?
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 2326
Joined: Mon Jul 28, 2008 3:54 amFollowed by: 2 members
Thanked: 173 times
GMAT Score:710

by gmatmachoman » Tue Jul 27, 2010 1:38 am
I generally find the square root of the number and find the closest prime number and look in to the options

In our case : X = 899

VX (sqrt X)is equivalent to 30. Look for prime numbers near to 30...Say 29 ,31 is there. SO do the math from there on


Another example : X = 400

VX = 20

5*(2 ^2)*5*(2^2). Pick 2 as smallest prime number.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 613
Joined: Thu Mar 22, 2007 6:17 amFollowed by: 64 members
Location: madrid
Thanked: 171 times
GMAT Score:790

by kevincanspain » Tue Jul 27, 2010 1:44 am
gmatmachoman wrote:
sanju09 wrote:The smallest prime factor of 899 is x. Which of the following is true of x?
a. 1 < x ≤ 7
b. 7 < x ≤ 14
c. 14 < x ≤ 21
d. 21 < x ≤ 28
e. 28 < x ≤ 35

[spoiler]Source: Manhattan GMAT Challenge Problem of the Week - 25 May 2010[/spoiler]
899 = 29 *31

Pick E
It's good to realize that 900 is a perfect square, and thus 899 = 30^2 - 1^2 = 31 * 29
Kevin Armstrong
GMAT Instructor
Gmatclasses
Madrid
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 3650
Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members
Location: India
Thanked: 267 times
GMAT Score:760

by sanju09 » Tue Jul 27, 2010 1:49 am
kevincanspain wrote:
gmatmachoman wrote:
sanju09 wrote:The smallest prime factor of 899 is x. Which of the following is true of x?
a. 1 < x ≤ 7
b. 7 < x ≤ 14
c. 14 < x ≤ 21
d. 21 < x ≤ 28
e. 28 < x ≤ 35

[spoiler]Source: Manhattan GMAT Challenge Problem of the Week - 25 May 2010[/spoiler]
899 = 29 *31

Pick E
It's good to realize that 900 is a perfect square, and thus 899 = 30^2 - 1^2 = 31 * 29
That's brilliant only after realizing a nearby perfect square that could work like that, thanks Govind and kevincanspain for such useful inputs.
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1