A135113 Integers k such that 10^k + 67 is a prime number.

2, 4, 14, 26, 36, 60, 150, 410, 484, 972, 1942, 3694, 6926, 8582, 11930, 16076, 16276, 22820

Offset: 1

Author

Julien Peter Benney (jpbenney(AT)gmail.com), Feb 12 2008

Keywords

• nonn
• more

Comments

The next k, if it exists, is > 100000. - Robert Price, Apr 25 2011

See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "10067".

Examples

			4 is a term: 10^4 + 67 = 10000 + 67 = 10067, which is a prime number.
		

Links

• Makoto Kamada, List of near-repdigit-related prime numbers.
• Index entries for primes involving repunits.

Crossrefs

Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054.

Extensions

Term 11930 from Robert Price, Mar 22 2010

Terms 1942, 3694, 6926, 8582, 16076, 16276, 22820 from Robert Price, Sep 04 2010

Edited by Ray Chandler, Dec 23 2010