Prime Palindromes
Level
pending
Palindrome numbers are numbers that are the same when put backwards. For example, 1234321 is a palindrome while 23442 is not a palindrome. Which of the following palindromes are also prime?
1579751
60933906
1236321
10233201
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1 solution
Note that the other three all are divisible by 3 since their digit sum is also divisible by three. Thus 1579751 is the answer.