What is wrong with my implementation of numerical integration?

I think similar questions have answered here and here.
I am also having similar problems with a code that performs the trapezoidal and simpson’s 1by3 rule. I have ran the code on a desktop which runs fine, but using a different machine, the code fails.
I am sharing the code and the error message.

Code

import numpy as np

exp = 5.33333
ul = 10
ll = -10
n = 50

def f(x):                           # The function
    return np.e**x**2

def trapezoidal(ll, ul, n):           #Setting up Trapezoidal rule
    traint = (f(ll) + f(ul)) / 2
    h = (ul - ll) / 2
    for i in range(1,n):
        k = ll + i * h
        traint = traint + f(k)
    traint = h * traint
    return traint

def simpson1by3(ll, ul, n):           #Setting up Simpson 1by3 rule
    simint = (f(ll) + f(ul)) / 2
    h = (ul - ll) / 2
    for i in range(1,n,2):
        simint = simint + (2 * f(ll + i * h)) + (4 * f(ll + ((i + 1) * h)))
    simint = simint * h / 3
    return simint

res_sim = simpson1by3(ll, ul, n)
res_trap = trapezoidal(ll, ul, n)

e_rel_trap = (res_trap - exp) / exp
e_rel_simp = (res_simp - exp) / exp

f1 = open("trap.txt", "w+")
f2 = open("simp.txt", "w+")

for n in range(1,50):
    h = (ul - ll) / 2
    res_trap = trapezoidal(ll, ul, n)
    res_simp = simpson1by3(ll, ul, n)
    f1.write(str(n) + " " + str(res_trap) + 'n')
    f2.write(str(n) + " " + str(res_simp) + 'n')

f1.close()
f2.close()

The error message is,

Traceback (most recent call last):
  File "simpson1by3+trapezoidal.py", line 30, in <module>
    res_sim = simpson1by3(ll, ul, n)
  File "simpson1by3+trapezoidal.py", line 26, in simpson1by3
    simint = simint + (2 * f(ll + i * h)) + (4 * f(ll + ((i + 1) * h)))
  File "simpson1by3+trapezoidal.py", line 11, in f
    return np.e**x**2
OverflowError: (34, 'Numerical result out of range')