140

This number is a composite.

+ The largest prime factor of 140 is 7. Note that 12 + 22 + 32 + 42 + 52 + 62 + 72 = 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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