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Which two whole numbers – without any zeros – multiply together to make 1 000 000?

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Brainteaser answer

A good way to tackle this question is by breaking down 1 000 000 into smaller numbers.

1 000 000 = 10 x 10 x 10 x 10 x 10 x 10

And since 10 = 2 x 5, we know that:
1 000 000 = 2 x 5 x 2 x 5 x 2 x 5 x 2 x 5 x 2 x 5 x 2 x 5

We can reorder these:
1 000 000 = 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5 x 5 x 5 x 5 x 5

And start grouping them again:
1 000 000 = 64 x 5 x 5 x 5 x 5 x 5 x 5
1 000 000 = 64 x 15625

Do you have another way of tackling the problem? Pop it in the comments below!

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