3, 7 and 11
Prime numbers go on forever.
127 prime numbers in that range. See related link for prime numbers up to 10000. Plus there is a link to download Zip files of prime numbers up to 1 million.
83, 3,and 2 are prime numbers which add up to 88.
137 and 11 are two prime numbers that add up to 148.
Prime numbers up to 12 are: 2, 3, 5, 7 and 11
They are: 3*7*11 = 231
3 x 7 x 11 = 231
To determine factors of a number it is necessary to divide the number by prime numbers of increasing value. If there is no remainder then the prime number is a factor. The square root of 231 is approximately 15 so it is necessary to divide by all the prime numbers up to 13 (15 is not a prime number). 231 ÷ 2 leaves a remainder of 1 231 ÷ 3 divides exactly 77 times (which is 7 x 11 - both are prime numbers) 231 ÷ 5 leaves a remainder of 1 231 ÷ 7 divides exactly 33 times (which is 3 x 11 - both are prime numbers) 231 ÷ 11 divides exactly 21 times (which is 3 x 7 - both are prime numbers) 231 ÷ 13 leaves a remainder of 10 If we multiply together the three numbers that are shown to be factors 3 x 7 x 11 = 231 this confirms that there are no other factors of 231 except 1 and 231 itself. This last condition is true for every positive integer. 231 is divisible by 1, 3, 7, 11 and 231
2x2x3x3x7=252
38 = 2 x 19
They are: 1 times 107 = 107 which is also a prime number
As a product of its prime factors: 2*3*7 = 42
No. Prime factors are the numbers that make up other numbers, but they have to be prime. Prime factorisation is the process of finding the prime numbers that create a number. This is when you multiply the prime numbers together and the product is the original number. For example: 20 5x4 5x2x2 This process is called prime factorisation. In this case, the prime numbers are 2, 2, and 5.
168 = 2 * 2 * 2 * 3 * 7
They are: 3*7*11 = 231
They are only: 1 times 2003 = 2003 because it is a prime number
252