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There are four pair of mirror primes.

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Q: How many prime numbers from 11 to 100 are there whose digits when interchanged give a prime number?
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What is a prime number with two identical digits?

11 is the only prime number with identical digits. After 11 all numbers with identical digits can be divided by atleast 11 or 3.


What is the number of digits for largest prime number?

As of August 2017, the largest known prime number is 2^74,207,281 − 1, a number with 22,338,618digits.I attached a link with the 100 largest known prime numbers, there you can see the number of digits.


A prime number times another prime number is?

If you multiply two prime numbers, the product (result) will be a composite number, not a prime number. A prime number has exactly two factors, 1 and itself. The product of two prime numbers will have those two numbers as factors, as well. The sum of two prime numbers might be prime if one of those two numbers is 2, the only even prime number, but otherwise it will not be a prime because two odd numbers will have an even sum, which means it is divisible by 2. Examples: 2 + 3 = 5 (prime) 3 + 7 = 10 (not prime) 13 + 17 = 30 (not prime) If you multiply two prime numbers, the sum of the digits of the product might or might not be prime. Examples: 2 x 7 = 14, sum of digits is 5 (prime) 2 x 11 = 22, sum of digits is 4 (not prime) 3 x 5 = 15, sum of digits is 6 (not prime) 3 x 7 = 21, sum of digits is 3 (prime) 5 x 7 = 35, sum of digits is 8 (prime)


10.) A two-digit number is prime. When you reverse the digits, that number is also prime. What could the number be List three possibilities.?

Some numbers that you can get when you reverse the digits and they are still prime numbers are: 403 ÷ 13 = 31 2,701 ÷ 37 = 73 1,207 ÷ 17 = 71


A prime number with two identical digits?

The number 11 is prime and has two identical digits.

Related questions

What is the largest two-digit number that is prime and has prime numbers for both of its digits?

73 is the largest two-digit number that is prime and has prime numbers for both of its digits.


What is the largest two digits number thst is prime and has prime numbers for both of its digits?

It is: 73 of which 7 and 3 are both prime numbers


What is the largest 2 digit number that is both 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.


What are prime digits and composite digits?

It would probably refer to a digit that is a prime number, or a composite number. Note that mathematicians normally talk about prime and composite NUMBERS, not individual digits.


What is the lowest prime number that has all of the numbers prime?

The smallest prime number in which all of the digits are also prime is 2.The smallest multi-digit prime number in which all of the digits are also prime is 23.


What are two prime numbers that if multiplied would generate a 400-digit number?

Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.


What four 3-digit prime numbers less than 200 each have a prime number for the sum of their digits AND a prime number for the product of their digits?

The four numbers are: 113, 131, 151 and 191. For the product of the digits to be prime, the number must contain 2 ones - which greatly simplifies the exercise.


What is a prime number with two identical digits?

11 is the only prime number with identical digits. After 11 all numbers with identical digits can be divided by atleast 11 or 3.


What number has 24 as the product of its digits and the sum of its digits is a prime number?

There are two numbers that satisfy the criteria. 38 and 83


What is the number of digits for largest prime number?

As of August 2017, the largest known prime number is 2^74,207,281 − 1, a number with 22,338,618digits.I attached a link with the 100 largest known prime numbers, there you can see the number of digits.


A prime number times another prime number is?

If you multiply two prime numbers, the product (result) will be a composite number, not a prime number. A prime number has exactly two factors, 1 and itself. The product of two prime numbers will have those two numbers as factors, as well. The sum of two prime numbers might be prime if one of those two numbers is 2, the only even prime number, but otherwise it will not be a prime because two odd numbers will have an even sum, which means it is divisible by 2. Examples: 2 + 3 = 5 (prime) 3 + 7 = 10 (not prime) 13 + 17 = 30 (not prime) If you multiply two prime numbers, the sum of the digits of the product might or might not be prime. Examples: 2 x 7 = 14, sum of digits is 5 (prime) 2 x 11 = 22, sum of digits is 4 (not prime) 3 x 5 = 15, sum of digits is 6 (not prime) 3 x 7 = 21, sum of digits is 3 (prime) 5 x 7 = 35, sum of digits is 8 (prime)


You are a prime number you have two digits The sum of your digits are 17 what number are you?

The only two digit numbers whose digits add up to 17 are 89 and 98. Since 98 is an even number, 89 is prime.