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# 140

This number is a composite.

The largest prime factor of 140 is 7. Note that 1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} = 140. [Cramer]

The start of a record-breaking run of 7 consecutive integers (140-146) with an even number of prime factors. Note that 7 is the largest prime factor of 140. [Gupta]

(There are 4 curios for this number that have not yet been approved by an editor.)

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