Twice the largest prime factor of 111111

I'm a quarter short...

10000

1001/13

That must be base ⁴√19 * √2, HK-47.

\sum_{i=0}^{12}{i}

Let's see *you* program inverse blackjack and do any better.

Passing grade

3²²

(82+82+82)/3

8383838383838383/101010101010101

What's better than the Ultimate Answer to Life, the Universe, and Everything?

Hearing it again!

The maximum speedometer reading on 1980s cars.

x++;

8*11-7

Two black pool balls

A speed at which one can't travel without going back in time

Pseudoprime

ninety, too!

Shall we nickle and dime it, sir?

We're out of dimes, man!

Crap...a nickle will have to do.

One of the few numbers that looks the same when turned upside down: 96

"Few" ?
In fact, their cardinality is the same as that of the natural numbers:
1 <=> 96
2 <=> 9966
3 <=> 999666
n <=> 100^n-(10^n+2)/3

Oh, and the largest prime under 100.

The largest multiple of the smallest prime that is smaller than the smallest number containing a certain number of repeated digits. The number of repetitions of this digit is given by the smallest prime, and the digit in question is the smallest one possible.