Besties Not-Quite-Palindrome
Raira asked her 4 bffs to share their favorite numbers. It just happened that all of the 5 numbers are prime, and Raira's number was the smallest one. The other 4 primes were:
- A: 1 less than a multiple of
- B: 2 more than a multiple of
- C: 3 less than a multiple of
- D: 4 more than a multiple of
Out of curiosity, she used a calculator to find the product of the favorite numbers, and then Shayena, the bff who was sitting across her at the table pointed out that the product looks exactly the same (on the calculator) when rotated 180 degrees.
Find the product of these primes.
The answer is 1962961.
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1 solution
The prime numbers are 7 , 1 1 , 1 3 , 3 7 , 5 3 , and the product 1 9 6 2 9 6 1 .