Re: [math-fun] prime ladders

A number in an odd base is odd when an odd number of its digits are odd.*. * Make up a meaningful sentence with >4 occurrences of "odd".

I guess it's not so odd that he should ask the odd language question occasionally on a math list, but anyway: it's an odd fact (perhaps at odds with our intuition), recently expressed in an odd way by RCS in some seventeen-odd words, that "a number in an odd base is odd when an odd number of its digits are odd". (however I'll stamp my foot and hold my breath before I'll work "Oppositional Defiant Disorder" into it!)