6280
This number is a composite.
6280 = 2^3 * 5 * 157 has a sum of distinct prime factors (2
+ 5 + 157 = 164) equal to the sum of the prime factors of
the two preceding numbers: 6278 = 2 * 43 * 73 (2 + 43 + 73
= 118); 6279 = 3 * 7 * 13 * 23 (3 + 7 + 13 + 23 = 46); 118
+ 46 = 164. [Post]
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