Three friends, Anya, Ben, and Chloe, compared their ages.
Anya: "Interestingly, all our ages are 2-digit prime numbers."
Ben: "The sum of Anya's age and mine is the day of Chloe's birthday, which was earlier this month."
Chloe: "That's odd. The sum of Anya's age and mine is the day of Ben's birthday, which is later this month."
Anya: "And the sum of Ben's age and Chloe's age is today's date."
What is Ben's age?