88388...07103 (381-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

                                          8 8388187786 3859857853 8398298278
2382181180 9797787773 7697617577 5174373973 3727719709 7016916836 7767366165
9653647643 6416316196 1761360760 1599593587 5775715695 6355754754 1523521509
5034994914 8747946746 3461457449 4434394334 3142141940 9401397389 3833793733
6735935334 9347337331 3173133113 0729328328 1277271269 2632572512 4123923322
9227223211 1991971931 9118117917 3167163157 1511491391 3713112711 3109107103

The largest prime formed by reverse concatenation of n consecutive 3-digit prime numbers (n = 127). [Gupta]