Composite Numbers

32+33+34+35+36 (31 is a prime number) = 170

367368369

Composite Numbers

The odd composite number is a positive integer which has a positive divisor other than one and the number itself. The first 105 composite numbers are the numbers 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100, 102, 104, 105, 106, 108, 110, 111, 112, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 128, 129, 130, 132, 133, 134, 135, 136, 138, and 140.

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Composite Numbers

A prime number is a natural number that has exactly two distinct natural number divisors: 1 and itself.

A composite number is a positive integer which has a positive divisor other than one or itself.

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Prime Numbers

Composite Numbers

The prime numbers between 1 and 200 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, and 199.

2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 101 103 107 109 113 127 131 137 139 149 151 157 163 167 173 179 181 191 193 197 199

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Math and Arithmetic

Prime Numbers

Composite Numbers

Show a modified algorithm flowchart to list even numbers between 20 and 40, 22, 24, 26, 28, 30, 32, 34, 36, 38 and that is 9 numbers

456

Composite Numbers

From the fact that it ends in a 5 you should know that it is divisible by 5. So it is composite.

The full factorisation is: 1025 = 52 * 41

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Factoring and Multiples

Prime Numbers

Numbers

Composite Numbers

Prime. It is only divisible by itself and one.

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Composite Numbers

The number 2311 is a prime number having no factors other than 1 and itself.

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Factoring and Multiples

Prime Numbers

Composite Numbers

Very simple. The answer is 49, because it is between 41-50 and 7+7=14, and 7 multiplied by 7=49.

223224225

Composite Numbers

8, 9 and 10

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Prime Numbers

Composite Numbers

The number 23 is a prime number. It has only 1 and 23 as its factors.

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Composite Numbers

7.4

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Prime Numbers

Numbers

Composite Numbers

A prime number is a number that is divisible by 2 positive integers - itself and one.

The prime numbers from 1-100 are:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.

1 is not a prime number because 1 is divisible by one positive integer, 1.

0 is not a prime number because it is divisible by an infinite number of positive integers.

Also 1 and 0 are neither prime nor composite.

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Composite Numbers

no because there are multiple ways to do factor trees until u get to all prime numbers

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Factoring and Multiples

Prime Numbers

Composite Numbers

Divide by 2, 3, 5, 7 etc

2x2x3x3=36

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Math and Arithmetic

Prime Numbers

Composite Numbers

28. The sum of its factors (smaller than 28) is 1 + 2 + 4 + 7 + 14 = 28.

123

Composite Numbers

The composite numbers are: 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86 ,87, 88

173174175

Composite Numbers

... It's prime.

169170171

Composite Numbers

fyf67ytf

169170171

Composite Numbers

The first 10 composites are: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18.

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Prime Numbers

Composite Numbers

648 is not prime. 648 = 2 * 2 * 2 * 3 * 3 * 3 * 3

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Prime Numbers

Composite Numbers

Yes, 103 is a prime number.

133134135

Composite Numbers

4, 6, 8, 9, 10, 12, 14, 15, 16,

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Composite Numbers

Yes, all numbers that have 2 in the one's place are composite numbers. In fact, all even numbers except for 2 itself are composite numbers.

112113114

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