A124658 Even numbers k such that if a person is born in year k and lives not more than 100 years, then he never celebrates his prime birthday on a prime year.

5246, 5888, 7702, 7954, 9952, 9974, 10342, 10532, 11986, 12176, 12688, 13528, 14968, 15178, 15832, 16766, 18692, 18748, 18804, 19106, 20822, 21928, 22486, 22826, 22886, 24260, 24272, 24596, 24868, 25678, 25708, 26966, 27134, 27146

Offset: 1

Author

Tanya Khovanova, Dec 22 2006

Keywords

• nonn

Comments

For odd years, if a man is born on an odd year, his not being able to celebrate his prime birthday on a prime year is equivalent to the year of birth being an odd composite minus 2: A007921 Numbers that are not the difference of two primes.

Crossrefs

Cf. A007921.