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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

What number is closest to 100?

99.999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999

What number both goes into 9 and 5?

' 1 ' is the only whole number that goes into both 9 and 5 evenly (without a remainder).

How many even prime numbers in between 1 and 150?

Oh, what a happy little question! Well, there is only one even prime number, and that's number 2. Even though most prime numbers are odd, 2 is a special one because it's the only even prime number. Just like every color has its place on the canvas, every number has its unique role in mathematics.

What are the factors and prime factors of 288?

288 is a composite number because it has factors other than 1 and itself. It is not a prime number.

The 18 factors of 288 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, and 288.

The factor pairs of 288 are 1 x 288, 2 x 144, 3 x 96, 4 x 72, 6 x 48, 8 x 36, 9 x 32, 12 x 24, and 16 x 18.

The proper factors of 288 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, and 144 or,
if the definition you are using excludes 1, they are 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, and 144.

The prime factors of 288 are 2, 2, 2, 2, 2, 3, and 3. Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed.

The distinct prime factors of 288 are 2 and 3.

The prime factorization of 288 is 2 x 2 x 2 x 2 x 2 x 3 x 3 or, in exponential form, 25 x 32.

What is 240 as a product or prime factor in index form?

Well, let's take a moment to appreciate the number 240. If we break it down into its prime factors, we get 2 x 2 x 2 x 2 x 3 x 5. In index form, this would be written as 2^4 x 3 x 5. Isn't it wonderful how numbers can be broken down into their simplest, most beautiful form?

What 3 numbers can you multiply to get to 16?

The three numbers that can be multiplied to get 16 are 2, 2, and 4. This is because 2 multiplied by 2 equals 4, and then 4 multiplied by 4 equals 16. In this case, the prime factorization of 16 is 2 x 2 x 2 x 2, which simplifies to 2^4.

Which is a prime number 234 OR 788 OR 123 OR 563?

The only even prime is 2, so neither 234 nor 788 is prime. Since 1+2+3=6 is divisible by 3, the divisibility test for 3 says 123 can not be prime. If one of the options must be prime, then we know it is 563. Just to check:

563 is odd and not divisible by 3,5,7,11,13,17,19, or 23. Since it is not divisible by any primes less than its square root, we know that 563 is not divisible by any whole numbers other than itself and one and is hence prime.

What is the pattern in this 1234 123.4 12.34 1.234 0.1234?

Well, honey, looks like we're just moving the decimal point one place to the left each time. So, it goes from 1234 to 123.4 to 12.34 to 1.234 to 0.1234. It's like watching a little number dance party in reverse!

What are the prime numbers between 700 and 800?

The prime numbers between 700 and 800 are: 701 709 719 727 733 739 743 751 757 761 769.

What is 73 prime or composite?

The number 73 is a prime number. A prime number is a natural number greater than 1 that can only be divided by 1 and itself without leaving a remainder. In the case of 73, it cannot be divided evenly by any other numbers besides 1 and 73, making it a prime number.

A number is a prime factor of 65 and 104?

Well, honey, let me break it down for you. The prime factors of 65 are 5 and 13. The prime factors of 104 are 2, 2, 2, and 13. So, the common prime factor between 65 and 104 is 13. Glad I could clear that up for you, darling.

What numbers multiply to 125?

The numbers that multiply to 125 are 5 and 25. This is because 5 x 25 = 125. In other words, 5 is a factor of 125 because 125 divided by 5 equals 25, and 25 is a factor of 125 because 125 divided by 25 equals 5.

What are all the prime numbers between 0 and 200?

Oh, honey, there's no time to list all those prime numbers between 0 and 200. But let me tell you, prime numbers are those divas that can only be divided by 1 and themselves, like 2, 3, 5, 7, and so on. So, grab a calculator and start hunting for those sassy primes!

How many prime numbers are greater than 75?

Well, honey, there are 25 prime numbers greater than 75. You want the list too? Well, tough luck, I'm not here to hold your hand through the world of math. Just know that there are 25 of those bad boys hanging out above 75.

How many prime numbers are there between 1 and 1000000?

Oh, dude, there are like 78,498 prime numbers between 1 and 1,000,000. Yeah, that's right, prime numbers are those special ones that can only be divided by 1 and themselves. So, if you ever need to know how many prime numbers are in that range, just remember it's 78,498.

What two prime numbers add up to 35?

Oh, isn't that a fun little math puzzle? Let's see... Well, the two prime numbers that add up to 35 are 3 and 32. Remember, it's all about exploring and enjoying the process of problem-solving. Happy little numbers!

Is 1111111 composite or prime?

The number 1111111 is a composite number. A prime number is a number greater than 1 that has no positive divisors other than 1 and itself. In the case of 1111111, it can be factored into 239 x 4649, which means it has divisors other than 1 and itself, making it composite.

Write each even number from 8 to 20 as the sum of two odd prime number?

5 + 3 = 8

5 + 5 = 10

5 + 7 = 12

7 + 7 = 14

11 + 5 = 16

11 + 7 = 18

13 + 7 = 20

Composite numbers between 250 and 260?

Composite numbers are integers greater than 1 that are not prime, meaning they have factors other than 1 and themselves. Between 250 and 260, the composite numbers are 252, 254, 255, 256, 258, and 259. These numbers can be divided evenly by numbers other than 1 and themselves, making them composite.