A factor can or cannot be a prime number
Ex: 2 is the factor of all other even numbers its a prime number
but 9 is a factor of 18 and its not a prime number
A prime is a factor but a factor being a prime number varies
CCCVI = 306
In Roman Numerals
M = 1000
D = 500
C = 100
L = 50
X = 10
V = 5
I = 1
The highest value letter always goes to the left. If a given value is repeated then it menas addition.
Hence
'C; is higher value than 'V' or 'I' . ( 100 > 5 > 1)
Since 'C; is repeated as CCC it means 100+ 100 + 100 = 300
V = 5
I = 1
So CCCVI = 300 + 5 + 1 = 306
NB If a lower value is to the left of a higher value, it means subtract .
Hence
VI = 5 + 1 = 6 , but IV = 5 - 1 = 4
A prime number is a number that is divisible only by 1 and itself; it has no other factors. A composite number is a number that is divisible by more than 2 numbers. The factors of 77 are 1, 7, 11, and 77. Therefore, 77 is a composite number.
A composite number is a number that has at least 3 factors. (It can be evenly divided by at least 3 number.)
25 has 3 factors: 1, 5, and 25.
396 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are every other positive integer except 1 and 0. 1 and 0 are neither prime, nor composite.
The numbers from 1 to100 that are not prime are 1, 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, and 100.
Prime numbers like counting numbers go tyo inifinity.
However, here are the prime numbers up to '20'.
2,3,5,7,11,13,17,& 19.
To determine if 211 is a prime or composite number, we need to check if it has factors other than 1 and itself.
We can try dividing 211 by prime numbers up to its square root, which is approximately 14.5:
211 ÷ 2 = 105.5 (not a whole number)
211 ÷ 3 = 70.333... (not a whole number)
211 ÷ 5 = 42.2 (not a whole number)
211 ÷ 7 = 30.142... (not a whole number)
211 ÷ 11 = 19.181... (not a whole number)
211 ÷ 13 = 16.230... (not a whole number)
As we can see, none of these divisions result in a whole number. So, 211 is not divisible by any prime number less than its square root.
Therefore, 211 only has factors of 1 and itself, which means it is a prime number.
We must ascertain whether 294 contains factors other than 1 and itself in order to classify it as a prime or composite number.
To start, we can see if it can be divided by any prime integer smaller than its square root, or roughly 17. As we examine the prime numbers that are smaller than 17:
294 ÷ 2 = 147 (a non-integer)
294 ÷ 3 = 98 (a non-integer)
58.8 (not a whole number) = 294 ÷ 5
42 (a whole number) = 294 ÷ 7
Thus, 294 divides by 7.
Given that 294 divides evenly by 7, it has factors besides 1. 294 is a composite number as a result.
To determine whether 2257 is a prime number or a composite number, we need to check if it has factors other than 1 and itself.
The factors of 2257 would be all the whole numbers that divide evenly into 2257. We can start checking divisibility by smaller prime numbers:
2257 is not divisible by 2 (because it's an odd number).
2257 is not divisible by 3 (the sum of its digits is not divisible by 3).
2257 is not divisible by 5 (because it doesn't end in 0 or 5).
2257 is not divisible by 7 (you'd have to do long division to confirm this).
2257 is not divisible by 11 (again, long division).
2257 is not divisible by 13 (long division).
2257 is not divisible by 17 (long division).
2257 is not divisible by 19 (long division).
2257 is not divisible by 23 (long division).
2257 is not divisible by 29 (long division).
And so on...
After checking some of the prime numbers up to its square root, we see that there are no prime factors other than 1 and 2257 itself. Therefore, 2257 is a prime number.
To find this, you can just find the factors of 22, which are 1, 2, 11, and 22.
'3'
3 x 4 = 12
3 x 7 = 21
NB '7' is also a prime number.
29 is a Prime number. There are no prime numbers between 29 and
'from 100' ??? If you mean 'less than 100' then there are 25 primes.
If you mean 'more than 100' then the answer is infinite, just like numbers are infinite.
All the prime numbers between 50 and 75 are 53, 59, 61, 67, 71 and 73.
The smallest number that has six different primes in its prime factorization is 30030 (2 x 3 x 5 x 7 x 11 x 13).