n = int(input("Enter a large number: ")) digits = [int(d) for d in str(n)] prime_sum = 0 for digit in digits: if digit <= 1: continue is_prime = True for i in range(2, digit): if digit % i == 0: is_prime = False break if is_prime: prime_sum += digit print(prime_sum)
or
Nigel Fernandes says:
n = int(input("Enter a large number: "))
digits = [int(d) for d in str(n)]
prime_sum = 0
for digit in digits:
if digit <= 1:
continue
is_prime = True
for i in range(2, digit):
if digit % i == 0:
is_prime = False
break
if is_prime:
prime_sum += digit
print(prime_sum)