This number is a prime.
The smallest Cyclops prime that remains Cyclops prime for D = 1, 2, 3, 4, 5 in 2D6D4D0D9D1D9. [Gupta]
The smallest Cyclops prime that remains Cyclops prime for D
= 1, 2, 3, 4, 5 in 2D6D4D0D9D1D9. [Gupta]