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5 replies to this topic

### #1 = W =

= W =

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Posted 23 March 2008 - 09:12 PM

• The number is not an odd number.
• It has exactly four factors.
• If you reverse the digits, a prime number is formed.
• The sum of the digits is a two digit prime number.
• The number is less than the square root of 10^4 .
• One of the digits is a square number.
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### #2 tinkerbelletbk

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Posted 23 March 2008 - 09:34 PM

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### #3 largeneal

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Posted 23 March 2008 - 09:36 PM

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### #4 = W =

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Posted 23 March 2008 - 10:27 PM

Oh, well done and so quickly! Was too easy for you...

What if the number has six factors? <_<
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### #5 xV1P3R

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Posted 24 March 2008 - 01:37 AM

92 or 98 for 5 factors.
Don't think 6 factors is possible <_<
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### #6 brhan

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Posted 24 March 2008 - 02:23 PM

92 or 98 for 5 factors.
Don't think 6 factors is possible <_<

98 is ok for 5 factors -- 1, 2, 7, 49, 98
92 is for 6 factors (not five!) -- 1, 2, 4, 23, 46, 92
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