10520...63453 (212-digits)

This number is a prime.

                                                                          10
5202718030 9674701448 1979765760 2573311006 7960564634 7718996561 8061374643
0859416164 4227333072 5551769024 5396593771 2356435426 0388645003 6760772625
5629541303 7616999104 4734225688 9196383327 5157686454 3454258650 3471563453

+ The first prime p of the form p=2^n+n, where n is an emirp (n=701). Note that this is the smallest prime, greater than a googol, of the form p=2^n+n. [Loungrides]

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