A036339 Concatenation of prime p and nextprime(p) is prime -> cycles of 2 steps possible.

467, 941, 13681, 14461, 21787, 22171, 22369, 24049, 24151, 25457, 29333, 37397, 41221, 42467, 43481, 46511, 48023, 54133, 56681, 68699, 75883, 85081, 101341, 103511, 117443, 120193, 126199, 137363, 144323, 145133, 158791, 175853, 181891, 183797

Offset: 1

Author

Patrick De Geest, Dec 15 1998

Keywords

• nonn
• base

Links

• C. Rivera, Details of procedure

Crossrefs

Cf. A030459, A034592, A036340, A036341.

Extensions

Offset corrected and missing 181891 inserted by Sean A. Irvine, Oct 26 2020