100191

Appears in sequences

• Least number that requires exactly n iterations of f(x) = reverse(x) - maxdigit(x) to reach zero.at n=31A097156
• Numbers that set a new record for the number of iterations needed to reach 0 under f(x) = reverse(x) - maxdigit(x).at n=25A097158
• Primitive numbers in A158235.at n=36A158245
• Number of times the digit 3 appears in the first 10^n decimal digits of sqrt(2), sometimes called Pythagoras's constant, counting after the decimal point.at n=5A322644