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Irregular primes with irregularity index 8.
1

%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