Prime Number Formed by Concatenating Consecutive Integers down to 1/Historical Note

Historical Note on Prime Number Formed by Concatenating Consecutive Integers down to 1

Richard K. Guy reports in his Unsolved Problems in Number Theory, 3rd ed. of $2004$ that this result was determined by Charles Nicol and Michael Filaseta, but he provides no citation and it has not been corroborated.

Sources

• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $82,818,079,787,776,757,473,727,170 \, \ldots \, 10,987,654,321$

• 2004: Richard K. Guy: Unsolved Problems in Number Theory (3rd ed.)