no. confussssssssssion

sum of all distinct primes of220


The answer is 18.

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2 solutions

Seth Lovelace
Jan 22, 2015

220 = 22x10=11x2x5x2

Distinct primes = 11, 5, 2

Sum of distinct primes = 11+5+2 = 18.

Bill Bell
Jan 21, 2015

The Python sympy library's factorint function returns a dictionary wherein the keys are the required primes.

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