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How do you divide a prime number?
Explanation: There are 6 ways to split this string into prime numbers which are (11, 3, 7, 3), (113, 7, 3), (11, 37, 3), (11, 3, 73), (113, 73) and (11, 373).
Can prime numbers be divided equally?
A prime number is an integer, or whole number, that has only two factors — 1 and itself. Put another way, a prime number can be divided evenly only by 1 and by itself. Prime numbers also must be greater than 1. For example, 3 is a prime number, because 3 cannot be divided evenly by any number except for 1 and 3.
Can you divide two prime numbers?
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. The only even prime number is 2.
Is 2 the only even prime number explain?
Students sometimes believe that all prime numbers are odd. If one works from “patterns” alone, this is an easy slip to make, as 2 is the only exception, the only even prime. One proof: Because 2 is a divisor of every even number, every even number larger than 2 has at least three distinct positive divisors.
What are the rules for finding prime numbers?
A prime number is a number which has just two factors: itself and 1. Or in other words it can be divided evenly only by itself and 1. For instance, 3 is a prime number because it can be divided evenly only by itself and one. On the other hand, 6 can be divided evenly by 1, 2, 3 and 6.
Which is the smallest prime no?
2
The definition of a prime number is a number that is divisible by only one and itself. A prime number can’t be divided by zero, because numbers divided by zero are undefined. The smallest prime number is 2, which is also the only even prime.
Are there any ways to split a string into prime numbers?
Note: A split that contains numbers with leading zeroes will be invalid and the initial string does not contain leading zeroes. There are 3 ways to split this string into prime numbers which are (31, 7, 5), (3, 17, 5), (317, 5).
Can a prime point have both left and right side numbers?
Left and right side numbers of index point 2 are 23 and 7 respectively and both are prime. Input : 2418 Output : -1 Explanation : No index point has both the left and right side numbers as prime. Note: First and last index can never be a prime point as they do not have left and right side numbers pair.
How to find the prime point of a digit?
Prime point is the index of the digit whose left and right side numbers are prime. Print all the prime points of the number. If no prime point exists print -1. Input : 2317 Output : 1 2 Explanation : Left and right side numbers of index point 1 are 2 and 17 respectively and both are primes.
Are there any index points that are both primes?
Input : 2317 Output : 1 2 Explanation : Left and right side numbers of index point 1 are 2 and 17 respectively and both are primes. Left and right side numbers of index point 2 are 23 and 7 respectively and both are prime. Input : 2418 Output : -1 Explanation : No index point has both the left and right side numbers as prime.