Rewrite the factor in increasing order: 2x2x2x3x3x5x7
Where a factor is repeated replace the repeats by the number of times the factor appears as a superscript.
2 appears 3 times so 23.
3 appears 2 times so 32.
So answer: 23x32x5x7
When you are learning about exponential form you may be required to write 51 and 71.
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