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Unique semiprime number (Posted on 2010-04-17) Difficulty: 1 of 5
What 3-digit number, a product of two distinct 2-digit primes has its digits (none of them being prime) in strictly ascending order ?

See The Solution Submitted by Ady TZIDON    
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Some Thoughts re: Solution- a tiny remark Comment 2 of 2 |
(In reply to Solution by hoodat)


Your solution is OK , but allow me a little remark:

  "169 = 13, so it's prime divisors are not unique...."

I believe you meant DISTINCT, not unique.



  Posted by Ady TZIDON on 2010-04-17 17:05:37
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