The single number 535971 does not comprise a sequence of numbers.
47, 53, 59, 61, 57, 71, 73, 79
The next 10 prime numbers after 29 are: 31 37 41 43 47 53 59 61 67 71.
53 59 61 67 71 73 79 83 89 97.
53, 59, 61, 67, 71, 73.
They are: 53, 59, 61, 67, 71 and 73
43 47 53 59 61 67.
It is 53 and here are some more 53, 59, 61, 67, 71, 73, 79, 83, 89, 97
53 59 61 67 71 73 79 83 89 97
53, 57, 59, 61, 67, 71, 73
53 59 61 67 71 73 79 83 89 97.
(59 + 71) / 2 = 65
All the prime numbers 50 through 75 are: 53, 59, 61, 67, 71, and 73.