Liu Pengli of China (144 BC) could be the firt serial killer in
history.
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It is easier to work backward. All multiples of 144 are
automatically divisible by 144. Multiples of 144 are 1*144, 2*144,
3*144, 4*144, ... and -1*144, -2*144, -3*144, -4*144, and so
on.