%I #18 Mar 05 2019 09:30:29

%S 527377,1360847,1490743,1725079,2007661,2722957,2845463,4303463,

%T 4715099,5950559,6667159,7008977,9855107,12873181,13153159,13442441,

%U 19085603,19552727,20015917,20763709,21528113,22598887,24828259,27198713,32030981,32831549,35455291,35548949

%N Irregular primes with irregularity index six.

%H Amiram Eldar, <a href="/A219334/b219334.txt">Table of n, a(n) for n = 1..1384</a> (from Harvey's list)

%H J. Buhler, R. Crandall, R. Ernvall, T. Metsankyla and M. A. Shokrollahi, <a href="http://dx.doi.org/10.1006/jsco.1999.1011">Irregular Primes and Cyclotomic Invariants to 12 Million</a>, J. Symbolic Computation 31, 2001, 89-96.

%H William Hart, David Harvey and Wilson Ong, <a href="https://doi.org/10.1090/mcom/3211">Irregular primes to two billion</a>, Mathematics of Computation, Vol. 86, No. 308 (2017), pp. 3031-3049; also available at <a href="https://arxiv.org/abs/1605.02398">arXiv:1605.02398 [math.NT]</a>, 2016.

%H David Harvey, <a href="https://web.maths.unsw.edu.au/~davidharvey/papers/twobillion/">Irregular primes to two billion</a> (includes a list of all primes less than 2^31).

%Y Cf. A061576, A007703, A000928, A073276, A073277, A060975, A219332, A219333, A219335.

%K nonn

%O 1,1

%A _Robert G. Wilson v_, Nov 18 2012

%E a(14)-a(28) from _Amiram Eldar_, Mar 05 2019