

A110933


Integers n such that 3*10^n+71 is a prime number.


0



4, 7, 16, 19, 190, 227, 235, 283, 319, 1655, 3955, 10666
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OFFSET

1,1


COMMENTS

See Kamada link  primecount.txt for terms, primesize.txt for discovery details including probable or proved primes  search on "30071".


LINKS

Table of n, a(n) for n=1..12.
Makoto Kamada, List of nearrepdigitrelated prime numbers.
Index entries for primes involving repunits.


EXAMPLE

n = 7 is a member because: 3*10^7+71 = 3*10000000+71 = 30000000+71 = 30000071, which is prime.


CROSSREFS

Cf. A049054, A088274, A088275, A095688, A107083, A108049, A108050, A108052, A108054.
Sequence in context: A236305 A212062 A101534 * A067398 A054599 A229917
Adjacent sequences: A110930 A110931 A110932 * A110934 A110935 A110936


KEYWORD

more,nonn


AUTHOR

Julien Peter Benney (jpbenney(AT)ftml.net), Oct 04 2005


EXTENSIONS

a(12) from Ray Chandler, Dec 23 2010


STATUS

approved



