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It would probably refer to a digit that is a Prime number, or a composite number. Note that mathematicians normally talk about prime and composite NUMBERS, not individual digits.
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Is 518 a composite number or a prime number?
It is composite, as are all whole numbers whose last digits are even.
A composite number that can be divided by 3 that isn't prime that is three digits?
102
Is 987654321 a prime number?
Nope it's Composite because the sum of digits is divisible by 3.
Does reversing the order of the digits of a 2 digit prime number always result in a prime number?
No because as for example 23 is a prime number but 32 is a composite number
Are 21 36 31 87 62 23 29 45 and 51 composite or prime?
23, 29 and 31 are prime. The rest are composite.
Is 518 a composite number or a prime number?
It is composite, as are all whole numbers whose last digits are even.
A composite number that can be divided by 3 that isn't prime that is three digits?
102
Is 267 prime or composite?
267 is a composite number - since the digits of the number add up to a multiple of three, it is divisible by 3. Its prime factorization is 3 x 89 = 267.
What is a number that has one prime number in it the digits add up to 19 it is a palindrome and the composite digits each have 4 factors?
838
Is 987654321 a prime number?
Nope it's Composite because the sum of digits is divisible by 3.
What is a staircase composite?
A number is called a staircase composite number when it has three prime factors that have different sized digits: the first is one digit, the second is two digits and the third is three digits. For example: [7] [41] [271] x 77 777 77 777 would be the staircase composite number.
Does reversing the order of the digits of a 2 digit prime number always result in a prime number?
No because as for example 23 is a prime number but 32 is a composite number
What is the least number of 1 digits of composite?
The least 1 digit number that is composite is 4. It is because all numbers before that are prime.
Is 651 prime or composite?
Composite: 651 has 3 as one of its factors (add the digits 6+5+1=12, which is a multiple of 3).Since it has a factor (3) in addition to itself and 1, it is composite.
Is one composite or prime both prime and composite or neither prime or composite?
neither prime or composite
Is 17 prime or composite number?
It is prime
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.
