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Formed from 17 followed by its reversal repeated three
times. Repeating the reversal before 17, we obtain another
prime: 71717117. Taking the reversal of 17 and and using
the same process, two new primes are yielded: 71171717,
17171771. Note that the reversal must be repeated at least
three times with a number to give prime. [Silva]
(There is one curio for this number that has not yet been approved by an editor.)
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