An honest number is a number n that can be described using exactly n letters. For example, 8 can be described as TWO CUBED, and 11 as TWO PLUS NINE.
In 2003, Bill Clagett found that
EIGHTEENTH ROOT OF EIGHT HUNDRED EIGHTY-FOUR QUATTUORDECILLION THREE HUNDRED THIRTY-FOUR TREDECILLION SIX HUNDRED EIGHTY DUODECILLION EIGHT HUNDRED TWENTY-SIX UNDECILLION SIX HUNDRED FIFTY-THREE DECILLION SIX HUNDRED THIRTY-SEVEN NONILLION ONE HUNDRED THREE OCTILLION NINETY SEPTILLION NINE HUNDRED EIGHTY-TWO SEXTILLION FIVE HUNDRED EIGHTY-ONE QUINTILLION FOUR HUNDRED FORTY-EIGHT QUADRILLION SEVEN HUNDRED NINETY-FOUR TRILLION NINE HUNDRED THIRTEEN BILLION FOUR HUNDRED THIRTY-TWO MILLION NINE HUNDRED FIFTY-NINE THOUSAND EIGHTY-ONE
contains 461 letters.