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both are composite numbers 51 is divisible by 1,3,17,51
and 91 by 1,7,13,91
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∙ 13y ago
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Is 41 51 71 81 91 a prime number?
41 is prime. 51 is composite. 51=3 x 17 . 71 is prime. 81 is composite. 92 91 is composite. 91 = 7 × 13
Which number is a prime number a.91 b.51 c.31 d. 21?
91 = 13*751 = 17*321 = 3*731 is prime. â–
Is 51 a prime?
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.
Are 51 61 71 91 prime numbers?
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.
How do you know without dividing that 91 is not in the prime factorization of 75257?
91 cannot be in the prime factorization of any number because it is not a prime number itself.
Which of 21 31 51 and 91 is a prime number?
31 is a prime number.
Is 41 51 71 81 91 a prime number?
41 is prime. 51 is composite. 51=3 x 17 . 71 is prime. 81 is composite. 92 91 is composite. 91 = 7 × 13
Which number is a prime 91 51 31 or 21?
31
Which is a prime number 91 51 31 21?
31
Which number is prime 91 51 31 21?
31
Why would 51 and 91 be mistaken for prime 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.
Which number is a prime number a.91 b.51 c.31 d. 21?
91 = 13*751 = 17*321 = 3*731 is prime. â–
What number is a prime number 91 51 31 21?
31 is the only one that has only two factors: 1 and itself. It is the prime number.
Which number is prime out of 91 51 31 21?
21 is divisible by 3 and 7, so it is composite. 91 is divisible by 7 and 13, so it is composite. 51 is divisible by 3 and 17. 31 is divisible by only 1 and itself, so it is the prime number.
Is 51 a prime?
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.
Which of these numbers are prime number 51 51 61 49?
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.
Are 51 61 71 91 prime numbers?
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.
