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KCC's Quizzes: Anniversary and Ages in Prime Numbers

In 1979, a mother and her 4 sons are aged 97, 67, 61, 59 and 53 respectively. All these ages and that year are prime numbers.

Questions:

  1. That “situation” did already happen (prime numbers in the year and in their 5 ages) in the past for that family. When and what were their ages?
  2. That “situation” can occur again in the future (we suppose science will allow us to live much longer than now). When and what will be their ages?
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