A106379 Real part of Gaussian prime numbers such that the Gaussian primorial product up to them is a Gaussian prime plus one.

1, 2, 3, 6, 5, 11, 10, 18, 12, 19, 10, 13, 5, 20, 6, 50, 74, 112, 40, 140, 139

Offset: 1

Author

Sven Simon, Apr 30 2005

Keywords

• nonn
• more

Comments

A106380 has the imaginary parts.

Examples

			(1+i)*(1+2i)*(2+i)*3*(2+3i)*(3+2i) - 1 = (-195-195i) - 1 = (-196-195i), which is a Gaussian prime. This is the third number with the property, so a(3) = 3.
		

Links

• Sven Simon, Readable list for A106379/A106380.

Crossrefs

Cf. A103431, A103432, A106377, A106380, A106381, A106383.

Extensions

Offset corrected and a(16)-a(21) added by Amiram Eldar, Aug 16 2025