Large gaps between consecutive prime numbers containing perfect powers
  For any positive integer $k$, we show that infinitely often, perfect $k$-th powers appear inside very long gaps between consecutive prime numbers, that is, gaps of size $$ c_k \frac{\log p \log_2 p \log_4 p}{(\log_3 p)^2}, $$ where $p$ is the smaller of the two primes. 
Kevin Ford, D. R. Heath-Brown and Sergei Konyagin
math.NT