Quick Answer: How Many 4 Digit Prime Numbers Are There?

What is the first 4 digit prime number?

Here are the first few prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, etc..

How many 4 digit combinations are there with 10 numbers?

10 000Finally you have 10 choices for the fourth digit and thus there are 10x10x10x10 = 10 000 possible 4 digit combinations from 0-9.

What is the most mysterious number?

61746174 is known as Kaprekar’s constant after the Indian mathematician D. R. Kaprekar. This number is notable for the following rule: Take any four-digit number, using at least two different digits (leading zeros are allowed).

How many 5 digit prime numbers are there?

The first 1000 prime numbers1521–40739741–6017919761–8028331381–10041943914 more rows

What is the largest 4 digit prime number?

1002 is even (and larger than 2) so it can’t be prime. The smallest is 1009, and the largest is 9973.

How many 4 digit number combinations are there?

10,000 possible combinationsThere are 10,000 possible combinations that the digits 0-9 can be arranged into to form a four-digit code.

Why is 11 not a prime number?

For 11, the answer is: yes, 11 is a prime number because it has only two distinct divisors: 1 and itself (11). As a consequence, 11 is only a multiple of 1 and 11.

What is a greatest number?

Despite having more numbers than atoms in the universe, trying to prove that your integer is bigger than anyone else’s integer has continued through the centuries. The biggest number referred to regularly is a googolplex (10googol), which works out as 1010^100.

What is the smallest 4 digit number with no number repeated?

-9876The smallest 4 digit number in which no digit is repeated is -9876.

What is the hardest 4 digit password?

If it guesses based on people’s natural inclination to pattern, the hardest to guess is “8068”. For some reason, when a study was done this was the least used 4-digit combination at the time.

Why 1 is not a prime number?

Proof: The definition of a prime number is a positive integer that has exactly two positive divisors. However, 1 only has one positive divisor (1 itself), so it is not prime.

What is the 4 digit greatest number?

9999The greatest 4-digit number = 9999. So, we say that we have 9000 four-digit numbers.

What is greatest and smallest number?

We know that a four digit number has four places, i.e., thousands, hundreds, tens and ones or units from left to right as Th, H, T, O. If greatest to lowest digits are placed at these places in descending order, we get the greatest number and if placed in ascending order, we get the smallest number.

What are the chances of guessing a 4 digit code?

It’s very simple. In 4 decimal digits there are 10,000 (0000 to 9999) possible values. The odds of any one of them coming up randomly is one in 10,000.

How do you find a 4 digit prime number?

Take a number, say, 26577. The unit digit of this number is not 0, 2, 4, 6 or 8. Now, take the sum of digits which will be: 2 + 6 + 5 + 7 + 7 = 27.