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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

How many prime numbers between 1 and 1 000 000 000?

There are 50,847,534 primes between 1 and 1,000,000,000.

They are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, ..., 999999733, 999999739, 999999751, 999999757, 999999761, 999999797, 999999883, 999999893, 999999929, 999999937.

[I'll leave the other 50,847,514 for you to find.]

Which 2 numbers are 7.5 units away from 0?

The two numbers that are 7.5 units away from 0 are 7.5 and -7.5. These numbers are equidistant from zero on the number line, one being positive and the other negative.

Is 1000000003 a prime number?

No, it is 23x307x141623 and yes 141623 is prime.

How do you write 58 as a product of its prime factor?

To express 58 as a product of its prime factors, first, divide it by the smallest prime number, which is 2. Since 58 is even, it can be divided by 2 to get 29. Next, check if 29 is a prime number; it is not divisible by any number other than 1 and itself. Therefore, the prime factorization of 58 is (2 \times 29).

How do you prime 6.7 cummins?

To prime a 6.7 Cummins engine, first ensure that the fuel system is free of air. Turn the ignition key to the "On" position without starting the engine, allowing the fuel pump to run for about 30 seconds. This will help circulate fuel through the system. If necessary, you can also manually prime the fuel system using the primer pump, which is often located on the fuel filter assembly. After priming, check for any leaks before attempting to start the engine.

What is the two primes number of 54?

The two prime numbers that add up to 54 are 7 and 47. Prime numbers are those greater than 1 that have no positive divisors other than 1 and themselves. In this case, both 7 and 47 meet the criteria of being prime, and their sum is indeed 54.

What is the prime power representation of 110?

The prime power representation of 110 can be expressed by factoring it into its prime components. The prime factorization of 110 is (2^1 \times 5^1 \times 11^1). This means that 110 can be represented as a product of the primes 2, 5, and 11, each raised to the power of 1.

What Prime numbers greater than 15.?

Prime numbers greater than 15 include 17, 19, 23, 29, 31, 37, 41, 43, 47, and so on. These numbers are only divisible by 1 and themselves, making them prime. There are infinitely many prime numbers, so this list continues indefinitely.

When are you in your prime of life?

The prime of life is often considered to occur between the late 20s and early 40s, a period when individuals typically experience peak physical health, mental acuity, and emotional resilience. However, this can vary greatly depending on personal circumstances, lifestyle choices, and cultural perspectives. Many also argue that the prime of life can extend beyond these years, as wisdom and experience can enhance one's quality of life at any age. Ultimately, it is a subjective experience shaped by individual goals and values.

How do you work out if 371 is a prime number?

371

It will not divide by '2' as it is not even .

It will not divide by '5' as it does not end in '5' or '0'.

It will not divide by '9' as the sum of the digits is '2'.

So try '3'

3)371 = 123.6666.... Not a whole number, so does not divide by '3'

Try '7'

7)371 = 53

No, so 371 is NOT a prime number because it has the factors of of '7' and 53'. which are both prime numbers.

What is 600 as a product of primes?

To express 600 as a product of prime factors, we can factor it as follows: 600 = 2 × 300 = 2 × 2 × 150 = 2 × 2 × 2 × 75 = 2^3 × 3 × 25 = 2^3 × 3 × 5 × 5. Therefore, the prime factorization of 600 is 2^3 × 3^1 × 5^2.

Which one of the following groups of numbers includes all prime numbers 1 3 11 A?

The group of numbers that includes all prime numbers is 3 and 11. A prime number is defined as a natural number greater than 1 that has no positive divisors other than 1 and itself. The number 1 is not considered a prime number. Thus, the prime numbers in the given group are 3 and 11.

How do you write the number 62 as a product of prime factors?

To find the prime factors of a number, first check if it is odd or even.

If even it will divide by '2' , the first prime number.

Since '62' is even it will divide by '2' .

Hence

2)62

The answer is '31'

'31' is also a prime number , so divide by itself, to arrive at an answer of '1'.

31)31

=1

So the Prime factors of '62' are 2, & 31.

NB When testing for prime factors. Check if the number is 'odd' ( 1,3,5,7,9)

or even ( 2,4,6,8,0) These are the suffix digits of any given number.

If even then it will divide by '2' , and keep on dividing by '2' until an odd number answer. Then test for '3' , then '5' , then ;7; et seq., until you arrive at '1'.

All the dividing numbers(quotients) are the prime factors.

NNB Some little 'tricks' . If a number ends in '5' or '0' it will divide by '5'

e.g. 10155 will divide by '5'

If the digits add to '9' , then it will divide by '9'.

e.g. 189 ; 1 + 8 + 9 = 18 => 1 + 8 = 9 will divide by '9'

Only '3' & '7' must be fully tested by division for the prime factors.

The first prime numbers , up to '20' are : - 2,3,5,7,11,13,17, & 19.

What is the product of the largest single-digit prime number and the largest two-digit prime numbers?

The largest single digit prime is '7'

The largest two digit prime is '97'.

Their product is

97 X 7 = 679.

Name the prime number between 20 and 30 whose ones digit is 7 greater than its tens digit?

The prime number between 20 and 30 whose ones digit is 7 greater than its tens digit is 23. The tens digit is 2, and the ones digit is 3, which is 7 greater than 2. Additionally, 23 is a prime number because it is only divisible by 1 and itself, with no other factors.

What is a prime number between 60 and 100 whose Ones digit is 6 less than its tens digit?

Prime numbers between 60 and 100 are ,

61,67, 71, 73, 79, 83, 87, 89, 91, 97,

Answer '71'. Because 7 - 1 = 6.

What is the prime factorization of 360 and show work?

To find the prime factorization of 360, we can divide it by the smallest prime number, which is 2.

  1. (360 \div 2 = 180)
  2. (180 \div 2 = 90)
  3. (90 \div 2 = 45)
  4. (45 \div 3 = 15)
  5. (15 \div 3 = 5)
  6. (5 \div 5 = 1)

Thus, the prime factorization of 360 is (2^3 \times 3^2 \times 5^1).

How many different prime factors dose 405 have?

The number 405 can be factored into its prime components as follows: 405 = 5 × 3^4. Therefore, the different prime factors of 405 are 5 and 3. This means that 405 has a total of 2 different prime factors.

Is the set of even counting number?

The set of even counting numbers includes all positive integers that are divisible by 2, such as 2, 4, 6, 8, and so on. This set is infinite and can be expressed mathematically as {2n | n ∈ ℕ}, where ℕ represents the set of natural numbers. Therefore, the set of even counting numbers is a well-defined subset of the natural numbers.

What does the composite index calculate?

A composite index calculates an overall measure by combining multiple individual indices or metrics into a single value, often used to assess performance, economic indicators, or market trends. It typically incorporates various factors, allowing for a more comprehensive analysis than any single index could provide. This approach helps in identifying patterns or trends that may not be evident when examining individual components separately. Composite indices are commonly used in finance, economics, and social research.

What are the Prime numbers between 14 and 36?

The prime numbers between 14 and 36 are 17, 19, 23, 29, 31. A prime number is defined as a natural number greater than 1 that has no positive divisors other than 1 and itself.

Is 100 and 202 relatively prime?

Two numbers are considered relatively prime if their greatest common divisor (GCD) is 1. The GCD of 100 and 202 is 2, since both numbers share this factor. Therefore, 100 and 202 are not relatively prime.