The only other single-digit number higher than 5 which is a Prime number is 7 - 9 is equal to 3 squared, and is thus not a prime number.
679 is the product of the largest single-digit prime number and the largest two-digit prime number.
A single digit prime number
The prime number between 20 and 30 whose ones digit is 7 greater than its tens digit is 23. The tens digit is 2, and the ones digit is 3, which is 7 greater than 2. Additionally, 23 is a prime number because it is only divisible by 1 and itself, with no other factors.
Any prime number greater than 10 is an odd number but cannot end in 5 as this makes it divisible by 5. Therefore the ones digit of any prime number greater than 10 must be 1, 3, 7 or 9.
23
The largest single digit prime number is 7.
3, 5, or 7
679 is the product of the largest single-digit prime number and the largest two-digit prime number.
16
A single digit prime number
Its impossible, there are only 5 single digit numbers that are not prime
The prime number between 20 and 30 whose ones digit is 7 greater than its tens digit is 23. The tens digit is 2, and the ones digit is 3, which is 7 greater than 2. Additionally, 23 is a prime number because it is only divisible by 1 and itself, with no other factors.
89 is a prime number between 70 and 100 that has the ones digit one greater than the tens digit.
Any prime number greater than 10 is an odd number but cannot end in 5 as this makes it divisible by 5. Therefore the ones digit of any prime number greater than 10 must be 1, 3, 7 or 9.
Probably 73.
There are 21 two-digit prime numbers. The first two-digit prime number is 11, and the last two-digit prime number is 97. Prime numbers are numbers greater than 1 that are only divisible by 1 and themselves.
23