Smarandache-Wellin number
Given a base , concatenate the base representations of the first primes into a single integer, placing the first prime as the most significant digit(s) and the th prime as the least significant digit(s). This is the Smarandache-Wellin number .
For example, in base 10, is 235711131719, the concatenation of the strings “2”, “3”, “5”, “7”, “11”, “13”, “17” and “19” reinterpreted as a single integer.
Placing a decimal point immediately preceding a base 10 Smarandache-Wellin number turns it into an approximation of the Copeland-Erdos constant.
References
R. Crandall and C. Pomerance, Prime Numbers: A Computational Perspective, Springer, NY, 2001: 72
H. Ibstedt, A Few Smarandache Sequences, Smarandache Notions Journal, Vol. 8, No. 1-2-3, 1997: 170 - 183