#!/usr/bin/env python3
import json, sys

def is_prime(n):
    if n < 2: return False
    if n == 2: return True
    if n % 2 == 0: return False
    limit = int(n**0.5) + 1
    for d in range(3, limit, 2):
        if n % d == 0: return False
    return True

def run():
    primes = [n for n in range(1, 101) if is_prime(n)]
    return {"primes": primes, "summary": "found 25 primes between 1-100"}

if __name__ == "__main__":
    result = run()
    print(json.dumps(result))