71 is a Prime number because it has only two factors whereas 81 is a composite number because it has more than two factors.
61 and 71 are prime numbers the rest are composite numbers
Yes.
Yes.
61 67 71 73 79.
No, 41, 51, 71, 81, and 91 are not prime numbers. A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. In this case, all the numbers listed can be divided by numbers other than 1 and themselves, making them composite numbers.
1. The numbers are co-prime
71 multiplied by 81 is 5,751.
The numbers are co-prime so the only common factor is 1.
Least Common Multiple (LCM) for 71 81 is 5,751
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 81 is composite, 111 is prime.
71 is a prime number. Its only prime factor is 71.
Yes, 71 is a prime number.