A106133 Numbers k such that the k-th semiprime == 8 (mod k).

1, 2, 62, 65, 82, 613417, 613423, 613425, 613427, 613435, 613446, 613515, 613517, 613606, 6384425573, 6384425633, 6384425637, 6384425639, 6384425645, 6384425651

Offset: 1

Author

Shyam Sunder Gupta, May 07 2005

Keywords

• nonn
• hard
• more

Comments

a(21) > 10^12. - Lucas A. Brown, Oct 18 2020

Examples

			a(3)=62 is a term because the 62nd semiprime (i.e., 194) == 8 (mod 62).
		

Links

• Lucas A. Brown, semiprimemods.py

Crossrefs

Cf. A001358.

Extensions

a(15)-a(20) by Lucas A. Brown, Oct 18 2020

a(1), a(2) by Lucas A. Brown, Nov 22 2020