A382456 Number of self-primes <= 10^n.

3, 6, 21, 115, 836, 6943, 63113, 585517, 5263827, 45808290, 398309972

Offset: 1

Author

Shyam Sunder Gupta, Mar 27 2025

Keywords

• nonn
• base
• more

Links

• Shyam Sunder Gupta, On Some Marvellous Numbers of Kaprekar, Exploring the Beauty of Fascinating Numbers, Springer (2025) Ch. 9, 275-315.

Crossrefs

Cf. A003052, A006880, A006378, A382452.