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Is 222111 a composite number?
Composite. 222111 has 9 as one of its factors [sum of its digits adds up to 9]. A Prime Number has only two factors : 1 and itself. Since this has at least one additional factor, it is composite.
Which composite number from six to twenty is closest in value to the sum of its prime factors?
The sum of the prime factors of 6 is closest in value to the composite number 6.
Is 1617 a prime number?
1617 is not a prime number. The sum of its digits is a multiple of 3, so 3 is one of its factors. A prime number has exactly two factors, 1 and the number itself, so 1617 is a composite number.
Is 987654321 a prime number?
Nope it's Composite because the sum of digits is divisible by 3.
What is a composite number between 31 and 50 with an even number of factors and has a sum of 16?
39 is a composite number whose proper factors add up to 16.
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 222111 a composite number?
Composite. 222111 has 9 as one of its factors [sum of its digits adds up to 9]. A Prime Number has only two factors : 1 and itself. Since this has at least one additional factor, it is composite.
Is 891 a prime number or a composite number?
891 is a composite number. Its factors are 1, 3, 9, 11, 27, 33, 81, 99, 297, and 891. An easy check for some numbers greater than 3 is by adding their digits. If the sum of the digits is 3 or a multiple of 3, the number is a composite. The digits of 891 add up to 18, which is a multiple of 3.
Which composite number from six to twenty is closest in value to the sum of its prime factors?
The sum of the prime factors of 6 is closest in value to the composite number 6.
Is 63 a prime or composite number?
not a prime number as it’s divisible by 1, 63, 3, and 21
Is 3411 a composite number?
3411 is a composite number. A simple way to check is to sum its digits, 3+4+1+1=9, which shows that 3411 has 3 and 9 as factors so it is definitely not a prime. The prime factors of 3411 are 3x3x379.
Is 1617 a prime number?
1617 is not a prime number. The sum of its digits is a multiple of 3, so 3 is one of its factors. A prime number has exactly two factors, 1 and the number itself, so 1617 is a composite number.
Is 153 a composite number?
It's divisible by three, since the sum of its digits is divisible by three. So it's composite.
Is 1029384877585784544444 prime or composite?
It's a composite number.Since it ends in '4', it's an even number, and '2' is a factor.Moreover, since the sum of its digits (111) is divisible by '3', '3' is also a factor.Since the number has more factors in addition to '1' and itself, it's not a prime number.
Is 987654321 a prime number?
Nope it's Composite because the sum of digits is divisible by 3.
A number for which sum of all its factors is equal to twice the number is called?
composite number
Is 993 prime or composite?
The number 993 is a composite number because you can divide it by 3. A good strategy for figuring this out on your own is adding up all the digits. If you can divide the sum of the digits by any numbers besides 1 and that number than that number will be a composite number. You can do it, just remember this!
