It is not only a two digit number less than 45, but also a prime number. The sum of odd numbers is 7, and the difference between the numbers is 1. What is the number? (to be expressed)

The odd number sum is 7, and the difference is 1
（7+1）÷2=4
（7-1）÷2=3
The two digit number that meets the condition is 43

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