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.
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41 is prime.
51 is composite. 51=3 x 17 .
71 is prime.
81 is composite. 92
91 is composite. 91 = 7 × 13
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. 71 is prime.No 71 is prime. 1 and 71 are the only factors.
3 x 17 = 51. It has factors other than 1 and itself. It is composite. 61 is prime. Its only factors are 1 and 61. 71 is prime. Its only factors are 1 and 71. 7 x 13 = 91. It is a composite number.
Yes, 71 is a prime number.
71 is a prime number.
61 and 71 are prime numbers the rest are composite numbers