Guest Posted March 23, 2008 Report Share Posted March 23, 2008 • 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. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted March 23, 2008 Report Share Posted March 23, 2008 74 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted March 23, 2008 Report Share Posted March 23, 2008 74 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted March 23, 2008 Report Share Posted March 23, 2008 Oh, well done and so quickly! Was too easy for you... What if the number has six factors? <_< Quote Link to comment Share on other sites More sharing options...
0 Guest Posted March 24, 2008 Report Share Posted March 24, 2008 92 or 98 for 5 factors. Don't think 6 factors is possible <_< Quote Link to comment Share on other sites More sharing options...
0 Guest Posted March 24, 2008 Report Share Posted March 24, 2008 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 Quote Link to comment Share on other sites More sharing options...
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Guest
• 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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