Answer:the greatest prime is 83 to test weather its prime or not
Step-by-step explanation:
So the only factors to check for 6971 are: 2, 3, 5, 7, 11, 13, 17, 19,, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83. Therefore, 6971 is a prime number. Greatest prime is 83 to test whether it is prime or not
