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Prime stars (Posted on 2018-04-13) Difficulty: 4 of 5
   ***
X  ***
  **** 
 ****   
****  
******

Each of the asterisks represents a prime digit.

Restore the original multiplication.

No Solution Yet Submitted by Ady TZIDON    
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Solution solution | Comment 1 of 2
there aren't many *** x * = ****
with all prime digits
775x3=2325
535x5=2775
555x5=2775
325x7=2275

As none of the three-digit numbers repeat, the other 3-digit number is a rep-digit.

only the last of them works
325x777=252525

  Posted by Jer on 2018-04-13 10:21:03
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