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Below 40 a prime number the sum of its digits is 11?

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


Which number is not a prime number 3 and 9 and 7and 5?

9 is not prime


Prime factorization for 125?

We note that '125' ends in '5'. So it will divide by '5', which is a prime number. Hence 5)125 5)25 5)5 = 1 Keep dividing by any prime number, that will go into the answer, in this case '5'. So 5 x 5 x 5 = 5^(3) = 125 NB Any number that ends in '5' or '0' will divide by '5'. Any number that ends with an EVEN number will divide by '2'. Any number were the digits sum to '9' will divide by '9'. e.g. 27 ; 2 + 7 = 9 27/9 = 3


What is the prime factorization of 11?

By the fact that it is a PRIME Number, it does NOT factorise, except for itself and '1'. They named prime numbers because they do factorise. NB Except for '2' all prime numbers are odd numbers. However, NOT all odd numbers are prime number. Odd numbers ending in 1,3,7,& 9. can be prime numbers. Odd numbers ending in '5' are NOT prime number So to test for a prime number. If it is EVEN , ending in 0,2,4,6,8 , it is NOT a Prime Number. It is ends in '5' it is NOT a prime Number. If the digits sum to '9' it is NOT a Prime Number. e.g. 531 ; 5 + 3 + 1 = 9 So 531/ 9 = 59 So it is NOT a Prime number. Then divide the given number by '3' or '7', if there isa remainder then it is a prime number. So 1253 Try '3' = 417 remainder '2' Try '7' =179 So 1253 is NOT a prime number.


Is the product of two prime numbers not a prime number?

The product of two prime numbers can never be another prime number, the numbers that you multiplied are factors of the product. (example, 9 times 5 is 45, 9 and 5 go into 45)

Related Questions

What are 5 prime numbers using the numbers 09each once?

There are none.Any number made by using the digits 0 to 9 once is divisible by 9 and so not a prime.There are none.Any number made by using the digits 0 to 9 once is divisible by 9 and so not a prime.There are none.Any number made by using the digits 0 to 9 once is divisible by 9 and so not a prime.There are none.Any number made by using the digits 0 to 9 once is divisible by 9 and so not a prime.


There is a number that is 5 times the sum of its digits What is this number?

The number is 45. The sum of its digits i.e. 4+5=9 Five times the sum of its digits i.e. 5 times 9 which is 45


Below 40 a prime number the sum of its digits is 11?

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


What type of number is 1?

It is a prime number. It is a digit (0,1,2,3,4,5,6,7,8,&9 are digits).


What is a prime number out of 9 6 5?

Out of 9, 6, and 5, five is the prime number.


Can you make a prime number from the numbers 1 0 8?

A prime number is only divisible by 1 and itself. If all three digits have to be used then any number formed from them is divisible by 9 as the sum of the digits = 9. Thus no prime number can be formed. If only two of the three digits are used then it cannot end in 0 or 8 as it would be divisible by 2. This only leaves 81 where the digits again total 9 and thus is divisible by 9. None of the single digits 0,1,8 are prime. 8 is an even number. 1 is classed as unity, 0 is zero.


Which number is not a prime number 3 and 9 and 7and 5?

9 is not prime


What prime number between 75 and 100which did not have a 9 as one of its digits?

83


Is 5 or 9 prime?

A prime number is a number that can only be divided by 1 and itself. While 5 can only be divided by 1 and 5, 9 can be divided by 1, 9 and 3. So 9 is not a prime number, 5 is.


There is a number that is 6 times the sum of its digits What is this number?

The number is 54. The sum of its digits is 5 + 4 = 9. 54/9 = 6.


Smallest possible natural number that is divisible by each of the digits from 1 to 9?

2520. The number needs to have a prime factorization of 23*32*5*7=2520.


Why do no digits of a prime number add up to 9?

Because they're in multiples of three - a quick way to tell if a number is a multiple of three is to add up the digits and see if the digits add up to a multiple of three e.g 576, 5+7+6=18, 1+8=9, 9 is a multiple of three