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Thanks Bob. But is the multiplier 2 for 36 unique? I cannot find any other number.

**Roger Austin**- Replies: 4

Look at number 36. If you multiply the two individual digits and then the product by 2 you get 36.

So 36 = (3x6)x2

Is there any other number that can duplicate this? Namely ABCD--n digits = (AxBxCxDx--n digits) x2? If not why not? I found other numbers with different multipliers like:

144 = (1x4x4)x9 and 224 = (2x2x4)x14

Are these unique numbers?

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