import math
def prime(p):
    if p == 1:
        return False
    for i in range(2, int(math.sqrt(p) + 1)):
        if p % i == 0:
            return False
    return True
def PrimeSum(m,n):
    res = 0
    for i in range(m, n + 1):
        if prime(i):
            res +=
 
 i
    return res

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