43909...62849 (92-digits)

This number is a prime.

                                                    43 9092777838 7003487856
9768760415 8867337437 8694610534 3887995366 0542671192 0010238400 4474562849

2^88 + 2^88 + 2^88 + 11^88 is prime. Note that 2*2*2*11 = 88. [Zucker]