As a product of its prime factors: 3*3*5*7 = 315
210 is not prime. 210 = 2 * 3 * 5 * 7
245 is not prime. Composite: (5 x 49 or 5 x 7 x 7) Also you can automatically determine a number as composite if: it ends with 2, 4, 6, 8, and 0: multiples of 2; or it ends with 5: multiples of 5.
1155 is a composite number because it ends with 5. All numbers that end with 5 except 5 itself are composite numbers because they are divisible by 5, which means there are at least three factors, 1, 5, and the number itself.
compositeSixty-five is a composite number because it is divisible by five. If a number can be divide by another one, then that number is composite. Numbers like 3, 5, 7, and 11 are all prime numbers because they cannot be divided by any other number.65 is composite, as is any number of 2 or more digits ending in 5.
3*5*7=105◄
The smallest number that is both odd and composite is 9, which is divisible by 3. The odd numbers are 1, 3, 5, 7, 9, 11, ..., and 1, 3, 5, and 7 are all prime. It is 9 that is the smallest odd composite number.
Yes, 4725 is a composite number. Its prime factorisation is: 3 x 3 x 3 x 5 x 5 x 7.
Since 364 is divisible by more than 364 and 1, 364 is a composite number.
As a product of its prime factors: 3*3*5*7 = 315
Prime: 2, 3, 5, 7 Composite: 4, 6, 8 Neither: 1
105 is not prime. 105 = 3 * 5 * 7
75890745 is not prime. 75890745 = 3 * 3 * 5 * 7 * 89 * 2707
210 is not prime. 210 = 2 * 3 * 5 * 7
819 is composite. 819 = 3 * 3 * 7 * 13 = 32 * 7 * 13
245 is not prime. Composite: (5 x 49 or 5 x 7 x 7) Also you can automatically determine a number as composite if: it ends with 2, 4, 6, 8, and 0: multiples of 2; or it ends with 5: multiples of 5.
A composite can be the integer power of a prime number. So, 49 =7*7 is one example. 27=3*3*3 is another. A non power composite example is 15=3*5.