2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 = 129
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The prime numbers less than 30 are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. Adding these numbers together, the sum of the prime numbers less than 30 is 129.
The sum of the three greatest prime numbers that are less than 39 is 97.
Prime numbers less than 10 = 2, 3, 5, 7The sum of prime numbers less than 10:= 2 + 3 + 5 + 7= 17
The sum of all prime numbers less than ten is 17. Pick a number 18 or higher.
The sum of all prime numbers less than one hundred is 1104.
420