Two-digit prime numbers whose digits add up to 10 are:193773
3, 13 and 23 are prime numbers.
The probability of getting two prime numbers when two numbers are selected at random and without replacement, from 1 to 10 is 2/15.
7 and 3 are two prime numbers that add up to 10 If you meant 73 then that is also a prime number because it has only two factors which are itself and one.
A number which has only two factors is called a prime number. Prime numbers from 1 to 10 are 2,3,5 and 7.
21 and -10 are co-prime. They only have the factor "1" in common. If you mean what numbers add to -10, whose product is 21, that would be -3 and -7.
The LCM of two numbers is the product of the numbers if one of the numbers is a prime. Since 11 is a prime, the LCM of 10 and 11 is 110 (10 x 11). If neither number had been a prime, the LCM would have been the product of all the prime factors of the numbers to their greatest power.
43 and 17.
The numbers are 2,3,5, and 7. If you add them together you get 17.
There are more than 10 prime numbers
10 does not have 6 prime numbers.
45 and 10
But 5+5 = 10 and 5 is a prime number
For a 2-digit prime number (which are all odd) to be the sum of two prime numbers, one of the prime numbers will have to be 2. That means the difference between the sum and the other addend will have to be 2. Prime numbers that differ by 2 are called twin primes. There are six pairs of 2-digit twin primes. Your numbers are 13, 19, 31, 43, 61 and 73.
First - what is a prime number? A number that can only be divided by one or itself. The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. Now you can add them yourself.
The only one pair of consecutive prime numbers possible are 2 and 3. After these very two numbers, every even number is a multiple of two. Furthermore, after 10, every number ending if five is a multiple of five. So, then no two prime numbers can be consecutive anymore. The span between prime numbers then only get wider and wider as the numbers continue to count upwards.
The LCM of prime numbers is simply their product (a x b, or x*y). The least common multiple of two numbers is the product of the two numbers divided by their greatest common factor. The greatest common factor of two prime numbers is 1. Therefore, the least common multiple of two prime numbers is the two numbers multiplied together, since dividing by 1 will not change the answer. The same applies to "relatively prime" numbers such as 10 and 21, where the GCF is also 1.
5 is prime, the rest aren't.
An HCF is the product of any common prime factors of two numbers. If two numbers have no common prime factors, then the HCF will be 1. For example, 10 and 21. The prime factors are 2x5 and 3x7. There is nothing in common, and so the HCF of 10 and 21 is 1. Two consecutive numbers will always have the HCF of 1.
2 and 5