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# A and B are two positive integers. What is the Greatest prime factor

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Retired Moderator
Joined: 22 Aug 2013
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A and B are two positive integers. What is the Greatest prime factor  [#permalink]

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17 Mar 2019, 11:38
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Difficulty:

45% (medium)

Question Stats:

54% (01:24) correct 46% (01:22) wrong based on 28 sessions

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A and B are two positive integers. What is the Greatest prime factor of the product A*B?

(1) Least Common Multiple of A & B has the greatest prime factor of 13.
(2) Greatest Common Divisor of A & B has the greatest prime factor of 7.
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Joined: 24 Jun 2008
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Re: A and B are two positive integers. What is the Greatest prime factor  [#permalink]

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17 Mar 2019, 12:27
The prime factors of AB will be identical to the prime factors of the LCM of A and B, so Statement 1 is sufficient, while Statement 2 is not.
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Re: A and B are two positive integers. What is the Greatest prime factor   [#permalink] 17 Mar 2019, 12:27
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# A and B are two positive integers. What is the Greatest prime factor

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