There are 21 two-digit prime numbers.
8, 11, and 20.
There are 17 such numbers.
2, 3, 5, and 7 are the only one-digit prime numbers.
73 is the largest two-digit number that is prime and has prime numbers for both of its digits.
There are 21 two-digit prime numbers.
8, 11, and 20.
There are 17 such numbers.
The answer depends on what you mean by "like 19". Possible labels: Counting numbers, Integers, Rationals numbers, Real numbers, Prime numbers, Odd numbers, Teens, 2-digit numbers.
2, 3, 5, and 7 are the only one-digit prime numbers.
73 is the largest two-digit number that is prime and has prime numbers for both of its digits.
There is no pattern.
17, 37, 47, 67, 97
997 is the largest 3-digit prime number.
there are 50 prime numbers between 1-100 and of them 2,3,5,7 are single digit so that would leave 46 double digit prime numbers between 1-100
73 is the largest 2 digit number that is both prime and has prime numbers for both of its digits.
679 is the product of the largest single-digit prime number and the largest two-digit prime number.