Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A127430
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A127430 Primes p such that 6p-5 and 6p+5 all also primes. +0
9
2, 3, 7, 11, 13, 17, 31, 41, 59, 71, 73, 97, 113, 139, 157, 193, 239, 269, 277, 311, 337, 349, 421, 449, 487, 577, 587, 619, 643, 701, 811, 823, 827, 941, 977, 1021, 1051, 1093, 1217, 1249, 1259, 1361, 1373, 1471, 1571, 1721, 1723, 1747, 1777, 1789, 1861, 1907 (list; graph; listen)
OFFSET

1,1

EXAMPLE

Example: 11, 6*11+5=71, 6*11-5=61 are all primes.

MATHEMATICA

Select[Range[5000], PrimeQ[ # ] && PrimeQ[6# + 5] && PrimeQ[6# - 5] &]

CROSSREFS

Sequence in context: A045321 A045322 A023221 this_sequence A106483 A145673 A040116

Adjacent sequences: A127427 A127428 A127429 this_sequence A127431 A127432 A127433

KEYWORD

nonn

AUTHOR

Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 31 2007

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


AT&T Labs Research