Any integer of the form 36pq, with p, q prime>3, is tau

[sniffnoy]

Haha. I remember at PROMYS Josh Zelinksy said he had a published paper on τ numbers. Well today I finally thought to look it up. I didn't feel like thinking too much, though, so I just sort of skimmed through it after his proof that π(n)=o(T(n)) where T(n) is the number of τ numbers ≤ n.

-Sniffnoy (a Google for 'Joshua Zelinksy tau' turns it up as first result)

--
"I know the human being and fish can coexist peacefully."
-George W. Bush