10000...44239 (100-digits)

This number is a prime.

                                            1000000000 0000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000044239

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The smallest 100 digit Sophie Germaine prime. Notice also that it has Sophie Germaine prime digital sum. [Patterson]