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Prime Numbers
Numbers greater than 1 that have no positive divisors other than 1 and themselves.
What prime numbers are between 100 and 110?
101, 103, 107, and 109.
Is there a prime number between 100 and 110?
No, Jasmine is incorrect.
Sum of Digits Equals What Condition?
The sum of its digits is one more than a square number.
Example of a Prime Number with a Specific Sum
11, since 1 + 1 equals 2, which is one more than 1 squared.
Prime Factorization of 72
2² × 3².
How to find the LCM of two numbers with prime factors?
Take the highest power of each prime factor present in either number.
LCM of P and Q
3^7 × 7^3 × 11².
How to find the HCF of two numbers with prime factors?
Take the lowest power of each prime factor present in both numbers.
HCF of P and Q
7³.