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A328799
Primes p that are simultaneously of the forms 2*q+1, 4*r+3, 6*s+5 and 8*t+7 where q,r,s,t are primes.
1
23, 47, 1439, 2879, 11279, 51599, 209519, 243119, 349199, 507359, 700319, 903359, 1190639, 1342079, 1650959, 1956719, 2978399, 3304079, 3376559, 3841679, 4858559, 5404319, 5454719, 6207599, 6486479, 7682399, 7825439, 8169599, 8826479, 8970959, 9546959
OFFSET
1,1
COMMENTS
All terms == 23 (mod 24). All but the first == 47 (mod 48).
LINKS
EXAMPLE
a(3)=1439 is a term because 1439=2*719+1=4*359+3=6*239+5=8*179+7 and 1439, 719, 359, 239 and 179 are all primes.
MAPLE
map(t -> 24*t+23, select(k -> andmap(isprime, [3*k+2, 4*k+3, 6*k+5, 12*k+11, 24*k+23]), [0, seq(k, k=1..10^6, 2)]));
CROSSREFS
KEYWORD
nonn
AUTHOR
J. M. Bergot and Robert Israel, Nov 18 2019
EXTENSIONS
Clarified definition. - N. J. A. Sloane, Nov 15 2021
STATUS
approved