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Prime Numbers
A prime number is a number that has exactly two factors: 1 and itself. All whole numbers greater than 1 are either prime numbers or can be written as the product of prime numbers. There are an infinite number of prime numbers, but they occur less frequently among larger numbers. Prime numbers are important in cryptography and number theory.
30,833 Questions
Yes all even numbers are composite with the exception of 2 which is a prime number because it has only two factors which are itself and one
Is 2417157343791137476189 are prime numbers?
There's no way to tell what those numbers are. I'll do two-digit numbers.
24, 17, 15, 73, 43, 79, 11, 37, 47, 61, 89
Of those, 15 and 24 are not prime.
No, 88 is a composite number. Prime numbers are defined as any real, non negative integers that have no other factors than "1" and itself.
An example is "3", nothing except 1 x 3, can make 3, so this is prime. So 88 is composite because 8 x 11, 44 x 2, and 22 x 4.
Is the number 179 a composite number?
you bet it is! One hundred and seventy nine is a prime number. You might even say it's
optimus
prime. But of course, that wouldn't make any sense
therefore its not a composite :)
its a prime
What are numbers that are close to the given numbers to make estimation easier?
15 ,67, and 84 are numbers that are close to the given numbers to make estimation easier.
Which number is a prime 117 or 84?
Neither number is prime: 117 is divisible by 3 and 84 is divisible by 2.
Is the number 24 composite or prime?
Composite. All positive, whole numbers greater than two and ending in 0, 2, 4, 6 or 8 are composite.
No, its factors are: 1, 7, 19, 133.
A prime number can be divided, without a remainder, only by itself and by 1. For example, 17 can be divided only by 17 and by 1. so no
Is a 166 prime or composite number?
166 is a composite number. A prime number has exactly 2 factors, 1 and the number itself. All even numbers greater than 2 (numbers ending in 2, 4, 6, 8, or 0) are composites because they have more than 2 factors.
What is a visual representation of the prime factors of a number?
well prime numbers are 1 2 3 5 7 11 13 15 17
What 2 numbers added together to equal -6 and multiplied to equal -432?
The two numbers are 18 and -24.
If you're having trouble with the factoring, you can always use the quadratic formula:
Let the two numbers be a & b. a*b = P and a+b = S {for Product and Sum}
So substitute b = S-a {from the Sum formula}, and you have a*(S-a) = P, or:
- a*S - a² = P ----> a² - S*a + P = 0.
- So with the quadratic formula:
- a1 = (-S + sqrt(S^2 - 4*1*P)/(2*1) And
- a2 = (-S - sqrt(S^2 - 4*1*P)/(2*1)
Substituting -432 for P and -6 for S, we get a1 = 18, and a2 = -24. Note that substituting a1 into the original formulas, gives b = a2, or if you use a2, then you get b=a1. So the two numbers are a1 and a2.
