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How many different prime factors does the number 630 have

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Senior Manager
Joined: 10 Dec 2004
Posts: 273
How many different prime factors does the number 630 have [#permalink]

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24 Jan 2005, 14:04
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

How many different prime factors does the number 630 have
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Current Student
Joined: 28 Dec 2004
Posts: 3357
Location: New York City
Schools: Wharton'11 HBS'12

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24 Jan 2005, 14:36
4. distinct prime factors, in all 5! 2,3,3,5,7

3, 5, 7, 2 are the distinct factors..
Director
Joined: 19 Nov 2004
Posts: 556
Location: SF Bay Area, USA

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24 Jan 2005, 16:51
3x3x7x5x2

Distinct Prime factors 3,7,5,2 = 4
24 Jan 2005, 16:51
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