10989...89011 (217-digits)
This number is a prime.
1098901
0989010989 0109890109 8901098901 0989010989 0109890109 8901098901 0989010989
0109890109 8901098901 0989010989 0098901098 9010989010 9890109890 1098901098
9010989010 9890109890 1098901098 9010989010 9890109890 1098901098 9010989011
The smallest invertible unique prime. [Marcel]
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