# Python: Find the index of the largest prime in the list and the sum of its digits

## Python Programming Puzzles: Exercise-76 with Solution

Write a Python program to find the index of the largest prime in the list and the sum of its digits.

Input: [3, 7, 4] Output: [1, 7] Input: [3, 11, 7, 17, 19, 4] Output: [4, 10] Input: [23, 17, 201, 14, 10473, 43225, 421, 423, 11, 10, 2022, 342157] Output: [6, 7]

**Pictorial Presentation:**

**Sample Solution:**

**Python Code:**

```
#License: https://bit.ly/3oLErEI
def test(nums):
n, i = max((n, i) for i, n in enumerate(nums) if is_prime(n))
return [i, sum(int(c) for c in str(n))]
def is_prime(n):
return n > 1 and all(n % j for j in range(2, int(n ** 0.5) + 1))
nums = [3, 7, 4]
print("List of numbers:",nums)
print("Index of the largest prime in the said list and the sum of its digits:")
print(test(nums))
nums = [3, 11, 7, 17, 19, 4]
print("\nList of numbers:",nums)
print("Index of the largest prime in the said list and the sum of its digits:")
print(test(nums))
nums = [23, 17, 201, 14, 10473, 43225, 421, 423, 11, 10, 2022, 342157]
print("\nList of numbers:",nums)
print("Index of the largest prime in the said list and the sum of its digits:")
print(test(nums))
```

Sample Output:

List of numbers: [3, 7, 4] Index of the largest prime in the said list and the sum of its digits: [1, 7] List of numbers: [3, 11, 7, 17, 19, 4] Index of the largest prime in the said list and the sum of its digits: [4, 10] List of numbers: [23, 17, 201, 14, 10473, 43225, 421, 423, 11, 10, 2022, 342157] Index of the largest prime in the said list and the sum of its digits: [6, 7]

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**Python Code Editor :**

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