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Q: Why is the number 65 have 13 as a factor and is the sum of the digits of the number is 11?

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what number is prime to 40 29 - it's a prime number (divisible only by 1 and itself) and if you sum the two digits 2 + 9 = 11

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

Try different numbers who have a sum of digits equal to 11:38: Not a prime.29: This is a prime.Starting with 1: The other digit would have to be 10, so there are no further options.29.

It is 11.

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65

65

65

65

No integer fits those conditions.

1 + 1 = 2 The sum of the digits is therefore 2.

It you add up all the digit in the number they will total 11. For example the number 425 has digits that sum to 11. (4 + 2 + 5 = 11)

11

The number 1111115

How about 65 because 6+5 = 11

83

12

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