%I #6 Jan 24 2018 07:57:55
%S 381348997,717636389,778090129,1496216791
%N Irregular primes with irregularity index 8.
%H W. Hart, D. Harvey and W. Ong, <a href="https://arxiv.org/abs/1605.02398">Irregular primes to two billion</a>, arXiv:1605.02398 [math.NT], 2016.
%H W. Hart, D. Harvey and W. Ong, <a href="https://doi.org/10.1090/mcom/3211">Irregular primes to two billion</a>, Mathematics of Computation, 86 (2017), 3031-3049.
%Y Cf. A073276, A073277, A060975, A219332, A219333, A219334, A219335.
%K nonn,hard,more
%O 1,1
%A _Felix Fröhlich_, Jan 07 2018