I'm sure there are more than 2 prime numbers that are 400 digits long.
There are 17 such numbers.
73 is the largest two-digit number that is prime and has prime numbers for both of its digits.
73 is the largest 2 digit number that is both prime and has prime numbers for both of its digits.
997 is the largest 3-digit prime number.
Greatest 2 digit prime number is 97. Lease 2 digit prime number is 11.
There are 17 such numbers.
The greatest two-digit prime number is 97. The lowest two-digit prime number is 11. The product of the two numbers is equal to 1067.
For the tens digit to be a prime number then it must equal 2, 3, 5 or 7. There are four 3-digit prime numbers that fit the above condition and also have the tens and units digits forming a 2-digit prime number. 131, 137, 173, 179. The person supplying the question may like to sum the various combinations.
73 is the largest two-digit number that is prime and has prime numbers for both of its digits.
The largest single digit prime is '7' The largest two digit prime is '97'. Their product is 97 X 7 = 679.
73 is the largest 2 digit number that is both prime and has prime numbers for both of its digits.
The ratio of the number of one-digit prime numbers to the number of one-digit composite numbers is one to one. The one-digit prime numbers are 2, 3, 5, and 7. The one-digit composite numbers are 4, 6, 8, and 9. Therefor, the ratio is 4:4, which simplifies to 1:1.
997 is the largest 3-digit prime number.
Greatest 2 digit Prime number is 97. Lease 2 digit prime number is 11.
Greatest 2 digit prime number is 97. Lease 2 digit prime number is 11.
There are four of each.
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.