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What else can I help you with?
How do you know when you have found the longest factor string for a number?
All of the factors are prime.
How do you know when you have found the longest possible factor string of a number?
When all of the numbers are prime.
How you know that 2 is a prime factor?
2 is a prime number because its only factors are one and itself. Since 2 is a prime number, if it is a factor of your number, it is a prime factor.
Do you need to know all the factors of a number to decide if its prime or composite?
No. If the number has one factor (other than 1 and itself) it is a composite. However, to establish that a number is prime it needs to be checked for divisibility by each prime number up to the square root of the number. If the only factor found is 1, then it is a prime.
How to get largest prime factor?
All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this. Example: 210 210 Divide by two. 105,2 Divide by three. 35,3,2 Divide by five. 7,5,3,2 Stop. All the factors are prime. 2 x 3 x 5 x 7 = 210 That's the prime factorization of 210. The largest of those numbers is the largest prime factor.
How you know the prime factor?
a number itself and 1
How do you know immediately that 2056 is not a prime factor?
2056 is an even number. The only even prime number is 2.
How do you know when you have found the longest factor string for 840?
You will know because all of the numbers are prime.
Are there any numbers that are a factor of 16 cube number and prime?
don't know if I understand your question, but: there are no numbers that are both cube numbers and prime numbers 8 is a factor of 16 that is a cube number (2^3) 2 is a factor of 16 that is a prime number
How do you know what prime numbers are?
You try whether a number is divisible by all integers above 2, up to the number's square root. If no such factor is found, then it is a prime number. For large numbers, more efficient (and more complicated) methods exist.
Is 37 prime?
Yes it a prime number because it has only two factors and you will know if a number is prime factor if it's factors are only 1 and itself.
Do you need to know all of the factors of a number to know it is prime or composite?
To know that a number is prime you need to know that it has no factors other than 1 and the number itself.To know that a number is composite you only need to know one factor other than the number itself or 1.
