Скрипт не ставится символы нулей в начале в значениях

import random2
 
def extended_gcd(aa, bb):
    lastremainder, remainder = abs(aa), abs(bb)
    x, lastx, y, lasty = 0, 1, 1, 0
    while remainder:
        lastremainder, (quotient, remainder) = remainder, divmod(lastremainder, remainder)
        x, lastx = lastx - quotient*x, x
        y, lasty = lasty - quotient*y, y
    return lastremainder, lastx * (-1 if aa < 0 else 1), lasty * (-1 if bb < 0 else 1)
 
def modinv(a, m):
    g, x, y = extended_gcd(a, m)
    if g != 1:
        raise ValueError
    return x % m
 
 
with open("results2.txt", "w") as f:
    for _ in range(10):  # num_of_rows is the number of such results you want to store, replace it by the number
        M = random2.randrange(16**32)
        L = random2.randrange(16**32)
        print(hex(M*L), file=f)

import random2
 
def extended_gcd(aa, bb):
    lastremainder, remainder = abs(aa), abs(bb)
    x, lastx, y, lasty = 0, 1, 1, 0
    while remainder:
        lastremainder, (quotient, remainder) = remainder, divmod(lastremainder, remainder)
        x, lastx = lastx - quotient*x, x
        y, lasty = lasty - quotient*y, y
    return lastremainder, lastx * (-1 if aa < 0 else 1), lasty * (-1 if bb < 0 else 1)
 
def modinv(a, m):
    g, x, y = extended_gcd(a, m)
    if g != 1:
        raise ValueError
    return x % m
 
 
with open("results2.txt", "w") as f:
    for _ in range(10):  # num_of_rows is the number of such results you want to store, replace it by the number
        M = random2.randrange(16**32)
        L = random2.randrange(16**32)
        val = str(hex(M*L))
        if len(val) < 66:
            vals = val.split('x')
            vals.insert(1, 'x' + '0' * (66-len(val)))
            val = ''.join(vals)
        print(val, file=f)

>>> '0x%064x' % 123
'0x000000000000000000000000000000000000000000000000000000000000007b'

with open("results2.txt", "w") as f:
    for _ in range(10):  # num_of_rows is the number of such results you want to store, replace it by the number
        M = random2.randrange(16**32)
        L = random2.randrange(16**32)
        val = '0x%064x' % (M*L)
        print(val, file=f)