import math

def eh_primo(n):
    if n == 1:
        eh_primo = False
    elif n != 2 and n % 2 == 0:
        eh_primo = False
    else:
        eh_primo = True
        raiz = int(math.sqrt(n))
        for i in range(3, raiz+1, 2):
            if n % i == 0:
                eh_primo = False
                break
        
    return eh_primo

print(eh_primo(127))