Two-digit prime numbers whose digits add up to 10 are:193773
The smallest prime number, of course, is 2. The smallest prime number whose digits add up to 2 is, of course, 2. The next-smallest is 11. It is left as an exercise for the reader to determine whether the other numbers whose digits add up to 2 (e.g. 101, 1001, 10001) are prime.
17
The only two digit numbers whose digits add up to 17 are 89 and 98. Since 98 is an even number, 89 is prime.
it is 23 because 2+3 = 5
2014 ( The sum of the digits = 7, a prime number )
Two-digit prime numbers whose digits add up to 10 are:193773
The smallest prime number, of course, is 2. The smallest prime number whose digits add up to 2 is, of course, 2. The next-smallest is 11. It is left as an exercise for the reader to determine whether the other numbers whose digits add up to 2 (e.g. 101, 1001, 10001) are prime.
No. It is divisible by 3, as you will see if you add up the digits.
838
17
The only two digit numbers whose digits add up to 17 are 89 and 98. Since 98 is an even number, 89 is prime.
67
23 or 41
Since its digits add up to a multiple of three, it's divisible by three. That means it's not prime.
The only prime number with two digits whose digits sum to 14 is 59. To determine this, we can list out the prime numbers with two digits (from 10 to 99) and check which one has digits that sum up to 14. The only number that satisfies this condition and is also a prime number is 59.
it is 23 because 2+3 = 5