83, 89, and 97.
The numbers 83, 89 and 97 are prime.
The only prime numbers between 81 and 90 is... 83
They are: 79+2 = 81
Prime: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97Square: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100
61 67 71 73 79.
They are: 83, 89 and 97
83, 89, and 97.
Because 1-20 is smaller than 81-100. The bigger the number, the harder it is to be prime.
The numbers 83, 89 and 97 are prime.
29, 61, 23, 97, 41, and 67 are prime. 81, 51, 93, 77, and 39 are composite.
Three: 83, 89, 97
The only prime numbers between 81 and 90 is... 83
56: 2, 7 67: 67 75: 3, 5 81: 3 89: 89
All the prime numbers from 1 to 81 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, and 79.
83
They are: 79+2 = 81