Divisor 2048

To determine if any number is divisible by 2048, apply this test:

1. Ignore everything except the 11 right-most digits. Every larger digit than these is irrelevant because 10¹¹ is divisible by 2048.
2. The number should now be small enough to be able to deduce divisibility by 2048 with basic application of your 2048-times tables!

Easy!