A171430 Primes that are congruent to 3 mod n, where n is the index of the prime.
2, 3, 7, 17, 19, 127, 131, 139, 373, 383, 8419, 64553, 175211, 3523901, 3524713, 70115789, 514273231, 514275283, 1394194363, 1394197423, 1394197543, 1394198683, 1394198863, 1394199083, 1394199263, 1394199283, 10246935823, 204475053103, 4086199302923, 11091501631097
Offset: 1
Keywords
Examples
Mod(7,4)=3, Mod(17,7)=3.
Links
- Giovanni Resta, Table of n, a(n) for n = 1..46
Programs
-
Mathematica
Prime@ Select[Range[10^5], Mod[Prime[#] - 3, #] == 0 &] (* Giovanni Resta, Feb 25 2020 *)
Extensions
a(14) from Harvey P. Dale, Oct 21 2016
Terms a(1)-a(2), a(17) and beyond from Giovanni Resta, Feb 23 2020