45494...04561 (52-digits)

This number is a prime.

                   45 4945504551 4552455345 5445554556 4557455845 5945604561

+ A prime formed by concatenating 13 consecutive increasing integers (4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561). Note that 4549 and 4561 are prime. [Russo]

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