2 x 7 x 71 = 994
679 is the product of the largest single-digit prime number and the largest two-digit prime number.
its 567
997 is the largest 3-digit prime number.
The product of the ten one-digit numbers is 0.
It doesn't matter if you know that the largest three-digit prime number is 997 or that its cube root is 9.98998998. If you include zero in the whole numbers, the answer will be zero.
9
73 is the largest two-digit number that is prime and has prime numbers for both of its digits.
If you mean, "What is the largest number of digits possible in the product of two 2-digit numbers" then 99 * 99 = 9801, or 4 digits. Anything down to 59 * 17 = 1003 will have 4 digits.
43 + 47 = 90This is a sum, not a product.7 x 13 = 91
999 x 99 = 98901
80 and 625
99*99=9801