The sum of the numbers from 1 through 100 is 5,050.
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The sum of the numbers 1 through 27 is 378.
The sum of the all prime numbers from 1 to 100 is 1,161
The sum of all the numbers 1 through 200 is 20,100.
The sum of the whole numbers 1 through 1,000 is 500,500.