None of them
61 is a prime number. 49 is not a prime number as it is divisible by 7. 51 is not a prime number as it is divisible by 3.
Neither 50 nor 51 are prime numbers.
3929 is a prime number and 51 is a composite number
nothing they are both prime numbers
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.
A person unfamiliar with prime numbers could mistake 51, 91, or any other composite number for a prime number if the person did not factor the number to make sure it had no other factors then 1 and itself.
both are composite numbers 51 is divisible by 1,3,17,51 and 91 by 1,7,13,91
number of prime numbers between 51 and 101 = 10prime numbers between 51 and 101 = 53, 59, 61, 67, 71, 73, 79, 83, 80, 97
24, 51 and 72 are composite numbers 71 is a prime number.
31 is prime, but 51 is not as 51=3*17.
The digits in 51 add up to 6, so it is divisible by 3.51/3 = 17 (17, like 3 is a prime number)so the prime factors of 51 are the two numbers, 3 and 17(51, like all numbers, can also be divided without remainder by 1, but this is not usually counted as a prime factor)
No, 51 is not a prime number. A prime number is a number that has only itself and 1 as a factor. 51's factors are 1,3,17, and 51.