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7 is prime.
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∙ 9y ago
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What date is not a prime number between 1 31?
4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30
Is number 28 a prime number?
No, it is not a prime number.
What is the highest prime factor in 28 and 16?
In 28, 7. In 16, 2
What is the median of 16 28 16 21 18 15 26?
It is 18, the number in the middle when they are arranged in order.
Are 21 28 15 17 and 28 prime numbers?
theres only one even prime number, thats 2 prime numbers can only be divided by themselves, and 1 21, divisible by 3 or 7, so no 28 even number other than 2, so no 15, divisible by 3 or 5, so no 17 divisible only by itself and 1, so yes 28, even number, other than 2, so no
What is the LCM of 28 and 21?
To determine the least common multiple of two numbers, determine the prime factors of both number. Then, determine the prime factors they have in common. Multiply all their prime factors together (in other words, multiply both numbers together) and divide by the prime factors they have in common (in other words, their greatest common factor). The prime factors of 21 are 3 and 7. The prime factors of 28 are 2, 2, and 7. The prime factors in common are a single 7. Therefore, the lowest common multiple is 21 x 28 ÷ 7 = 84
What is a multiple of 7 that is not a prime number?
Multiples of 7 are 7, 14, 21, 28, 35, 42, 49, ..... None of these are prime numbers except 7.
Is it 28 is a prime?
No, 28 is a Composite Number.
Is 84a prime number?
No, 84 is not a prime number. It is divisible by 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84.
What are the prime factors of 81 28 and 16?
16: 2 28: 2, 7 81: 3
What are the prime number 256?
Prime factors of 256=2x2x2x2x2x2x2x2 (or 28)
What are the composite number by 28 21 17?
21 and 28 are composite.
