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Is the sum of 19 and 3 Prime or composite?
Composite.Composite.Composite.Composite.
What is the difference between the sum of the first ten prime numbers and the sum of the first ten composite numbers?
The sum first Prime number is (2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 ) = 129 The sum of the first composite numbers is (4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18) = 112 The difference is 129 - 112 = 17 !!!!!
Is 693 a prime or composite number?
693 can be divided by 3 ==> composite number. This is an easy prime because if you make a sum of all the digits: 6 + 9 + 3 = 18, if you can devide this sum by 3 than you can also divide the original number by 3.
What are 2 composite numbers whose prime factorization have a sum of 10?
2 composite numbers whose prime factorization have a sum of 10 are 30 (2+3+5=10) and 21 (3+7=10).
Is 321 prime or composite?
it is composite. Note that the sum of the digits is 3+2+1=6 and since this is a multiple of 3, we know that 3 is a factor of 321. in fact, 321 divided by 3 is 107
Is 147 a prime or composite number?
147 has factors other than 1 and itself, so it is not a prime number. For example, 147 is divisible by 3. (You can quickly check this by adding up the digits of 147: 1 + 4 + 7 = 12. If the sum of the digits is divisible by 3, so is the number.) Therefore, 147 is a composite number.
Is 987654321 a prime number?
Nope it's Composite because the sum of digits is divisible by 3.
Is 471 a prime or composite number?
471 can be divided by 3 ==> composite number. This is an easy prime because if you make a sum of all the digits: 4 + 7 + 1 = 12, if you can devide this sum by 3 than you can also divide the original number by 3, else you can't devide this number by 3.
What is the sum of the first 10 multiples of 3?
The sum of the first 10 multiples of 3 is 165.
A 2digit number with 2 different digits has a special property When a sum of its digits is added 2the product of its digits the result is the numberitself.What is the smallest number with thisproperty?
The answer is 39. 3+9=12, 3x9=27. 12+27=39.
Is 12345 prime composite or niether?
-- It ends in a 5, so 5 is a factor of it. -- The sum of its digits (15) is divisible by 3, so 3 is a factor of it. It probably has tons of other factors, but either of these is enough to prove that it's composite.
What is the composite number between 50 and 60 whose prime factors have a sum of 11?
54 Factors of 54 are 2,3,3,3 (54=2x33). Sum of the factors is 11=2+3+3+3.
