A156118 The only primes in single-prime centuries.

155921, 268343, 413353, 1004873, 1140091, 1272749, 1280023, 1357201, 1422367, 1444309, 1451423, 1468079, 1491377, 1553653, 1561919, 1653853, 1655707, 1733449, 1904311, 2045213, 2046553, 2052217, 2116291, 2166319, 2244091

Offset

1,1

Links

Table of n, a(n) for n=1..25.

Formula

A prime p is in the sequence iff it is the only prime in range (100*Floor(p/100),100*Ceiling(p/100)).

Mathematica

Prime[Last[#]]&/@Select[Partition[PrimePi[100Range[30000]], 2, 1], Last[#]- First[#]==1&] (* Harvey P. Dale, Nov 06 2011 *)

Crossrefs

Sequence in context: A050520 A049443 A228473 * A171658 A347936 A347939

Adjacent sequences: A156115 A156116 A156117 * A156119 A156120 A156121

Keyword

nonn,base

Author

Ki Punches, Feb 15 2009

Extensions

Edited and extended by Ray Chandler, Feb 20 2009

Definition corrected by Ki Punches, Feb 24 2009

Status

approved