Given the digits 11, 33, 44, 77, and 88, pick four of them to form 22 two-digit prime numbers. What is the largest possible product of the two numbers (do NOT include a comma in your answer)?

Are your "digits" 11, 33, 44, 77 and 88? OR 1, 3, 4, 7 and 8? I suspect the latter !

2 two-digit primes =83 x 71 =5893

Sorry, CORRECTION of the above:83 x 73 =6059