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A103069
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Numbers n such that 8*10^n + 3 is prime.
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1
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OFFSET
| 1,2
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LINKS
| Makoto Kamada, Factorizations of 800...003.
Sabin Tabirca and Kieran Reynolds, Lacunary Prime Numbers.
Index entries for primes involving repunits.
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EXAMPLE
| For n = 1 we have 7*10^1+3 = 7*10+3 = 73, which is prime.
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MATHEMATICA
| Do[ If[ PrimeQ[ 8*10^n + 3], Print[ n ]], {n, 0, 10000}]
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CROSSREFS
| Sequence in context: A181188 A142096 A075936 * A141877 A057230 A142177
Adjacent sequences: A103066 A103067 A103068 * A103070 A103071 A103072
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KEYWORD
| more,nonn
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AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 19 2005
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