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 A061246 Prime numbers with every digit a perfect square, i.e., consisting of only digits 0, 1, 4, 9. 8
 11, 19, 41, 101, 109, 149, 191, 199, 401, 409, 419, 449, 491, 499, 911, 919, 941, 991, 1009, 1019, 1049, 1091, 1109, 1409, 1499, 1901, 1949, 1999, 4001, 4019, 4049, 4091, 4099, 4111, 4409, 4441, 4909, 4919, 4999, 9001, 9011, 9041, 9049, 9091, 9109, 9199 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Chai Wah Wu, Table of n, a(n) for n = 1..10000 R. Ondrejka, The Top Ten: a Catalogue of Primal Configurations. EXAMPLE a(10) = 419, 419 is a prime and 1, 4 and 9 are squares. MATHEMATICA Select[FromDigits/@Tuples[{0, 1, 4, 9}, 4], PrimeQ] (* Harvey P. Dale, Sep 22 2019 *) PROG (Python) from itertools import product from sympy import isprime A061246_list = [int(i+''.join(j)+k) for l in range(10) for i in '149' for j in product('0149', repeat=l) for k in '19' if isprime(int(i+''.join(j)+k))] # Chai Wah Wu, Jan 19 2019 CROSSREFS Cf. A066591. Sequence in context: A165944 A100557 A066591 * A068493 A167535 A184328 Adjacent sequences:  A061243 A061244 A061245 * A061247 A061248 A061249 KEYWORD base,nonn AUTHOR Amarnath Murthy, Apr 23 2001 EXTENSIONS Corrected and extended by Jason Earls, May 17 2005 Edited by N. J. A. Sloane, Aug 29 2008 at the suggestion of R. J. Mathar STATUS approved

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Last modified October 14 12:21 EDT 2019. Contains 328006 sequences. (Running on oeis4.)