97531...53197 (127-digits)

This number is a prime.

              9753197 5319753197 5319753197 5319753197 5319753197 5319753197
5319753197 5319753197 5319753197 5319753197 5319753197 5319753197 5319753197

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The smallest prime greater than a googol formed by repeating the concatenation in descending order of the odd-digit sequence. [Loungrides]