|
|
A111021
|
|
Integers k such that 7*10^k + 31 is a prime number.
|
|
1
|
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "70031".
|
|
LINKS
|
|
|
EXAMPLE
|
k = 11 is a term because 7*10^11 + 31 = 7*100000000000 + 31 = 700000000000 + 31 = 700000000031, which is a prime.
|
|
MATHEMATICA
|
|
|
PROG
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
Julien Peter Benney (jpbenney(AT)ftml.net), Oct 04 2005
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|