A343833 Prime numbers of the form floor((j/7)*10^k) where 1 <= j <= 6 and k >= 1.

2, 5, 7, 71, 571, 857, 2857, 28571, 1428571, 71428571, 7142857142857, 571428571428571, 1428571428571428571428571, 28571428571428571428571428571, 7142857142857142857142857142857, 2857142857142857142857142857142857, 42857142857142857142857142857142857142857

Offset: 1

Author

Konstantin Kutsenko, May 01 2021

Keywords

• nonn
• base

Links

• K. Kutsenko, Cyclic prime numbers

Crossrefs

Cf. A001913, A101202.