login
A287171
Initial prime in set of 4 consecutive primes in arithmetic progression with difference 78.
2
998051413, 4976990483, 5038640083, 5280622483, 5901887533, 6840045103, 8733200093, 11838052453, 11978292923, 12348742883, 12844988753, 13009792643, 13658681843, 13849573433
OFFSET
1,1
COMMENTS
a(1) = 998051413 = A052239(13).
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
FORMULA
a(n) >> n log^4 n. - Charles R Greathouse IV, May 28 2017
MATHEMATICA
Select[Partition[Prime[Range[7*10^8]], 4, 1], Differences[#]=={78, 78, 78}&][[All, 1]] (* Harvey P. Dale, Mar 17 2018 *)
PROG
(PARI) p=2; q=3; r=5; forprime(s=7, , if(s-r==78 && r-q==78 && q-p==78, print1(p", ")); p=q; q=r; r=s) \\ Charles R Greathouse IV, May 27 2017
CROSSREFS
Cf. A052239.
Sequence in context: A363963 A230959 A234812 * A136953 A136961 A307478
KEYWORD
nonn
AUTHOR
Zak Seidov, May 27 2017
STATUS
approved