A381027 Isolated primes in A381019.

7643, 26357, 31643, 73517, 114073, 240263, 272347, 635821, 1719491, 2981159, 3610597, 4783469, 5294351, 7140083, 7170769, 9813593, 12521141, 13172477, 20443837, 22499627, 24098573, 24147133, 24891641, 50832209, 57741727, 60328483, 65714459, 84701363, 128297069

Offset: 1

Author

Gonzalo Martínez, Mar 03 2025

Keywords

• nonn

Comments

Prime numbers k in A381019 such that if k = A381019(m) for some integer m, then A381019(m - 1) and A381019(m + 1) are both composite.

Examples

			7643 is a term, since 75, 7643 and 58 are three consecutive terms of A381019, where A381019(1033) = 7643 is prime, while A381019(1032) = 75 and A381019(1034) = 58 are both composite numbers.
		

Crossrefs

Cf. A381019, A381120.

Extensions

More terms from Jinyuan Wang, Mar 09 2025