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What is the prime factorization of 52

What is the prime factorization of 51

What is the prime factorization of 74

What is the prime factorization of 954

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Q: How many two-digit prime numbers have four as one of their digits?
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Find 5 four digit numbers such that the product of the digits of each four digit prime number are also prime?

You had me until "product." The product of 4 digits can't be prime.


What four 3-digit prime numbers less than 200 each have a prime number for the sum of their digits AND a prime number for the product of their digits?

The four numbers are: 113, 131, 151 and 191. For the product of the digits to be prime, the number must contain 2 ones - which greatly simplifies the exercise.


How many prime numbers from 11 to 100 are there whose digits when interchanged give a prime number?

There are four pair of mirror primes.


What does four digits numbers mean?

1234, 2637, 7777, 2727 are examples of a four digit number. So any random four numbers are four digits.


What is the sum of the first four prime four?

The sum of the first four prime numbers is 17.


What is the largest four digit number the product of whose digits is 61?

61 is prime. You cannot make 61 by multiplying four digits.


How many four digit numbers can be formed from the digits 1 3 7 9?

you take the four digits and multiply 4 by 4 you get 16 digits


How many whole numbers have exactly four digits?

how many numbers exactly have 4 digits ? 8900, 8999, 9000, 9999


What are four prime numbers of 47?

47 does not have 4 prime numbers (factors or divisors).


If the digits 1234678 and 9 are used to form four two digit prime numbers each digit is used only once find the sum of the four two digit prime numbers?

You know that the odd digits have to be in the units places, and the evens in the tens place, so the general solution is: 80 + 60 + 40 + 20 + 9 + 7 + 3 + 1 = 220


There are a 110 lockers in kelly's gym Her locker noumber has three digits and is a prime number What are the four possible numbers for he locker?

101 103 107 109


What are the prime numbers of 48 90 105 56?

None of those four numbers are prime numbers.

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