Definition:Lychrel Number/Historical Note

Historical Note on Lychrel Number
, reporting on the state of play in $1986$ in his, noted that had performed $50 \, 000$ reversals, which produced a number of over $26 \, 000$ digits, still not palindromic.

The same source reported that had continued the search to $70 \, 928$ digits without any success at reaching a palindrome.

By $1997$, in his, he was able to report that and  had carried the process for $196$ to over one million digits, which was reached after $2 \, 415 \, 836$ reverse-and-add iterations, which took $3$ years of spare time on a Sun $3/260$.

They subsequently continued the work, taking the calculation to $2 \, 000 \, 000$ digits on a supercomputer, taking a mere $2$ months.

Still no sign of termination.

The term Lychrel number was coined in $2002$ by, as a near-anagram of the name of his girlfriend Cheryl.

It's anyone's guess how to pronounce it.