13519...39457 (136-digits)

This number is a prime.

    135193 1153673452 7220909715 0468320754 1861795680 9836948573 7984509004
9924613335 1421968761 6604840922 1294663081 9176164502 6441517565 6609939457

A prime from an arithmetic expression using only the digit "8" (almost): 8*88*888*…*8888888888888888+1 [Rivera]