To find the prime factorization it helps to first divide by obvious divisors. In this case, the number ends in a 5, so we know it can divide by 5. Do this and you get 49. This is known from times tables to be 7x7. Thus the prime factorization of 245 is 5x7x7.
By dividing your number by prime numbers until all the factors are prime. 210 105,2 35,3,2 7,5,3,2
2*2*5*5
99 = 32 x 11
2 x 3 x 5
sum of prime factors of 245 = 12factors of 245: 1, 5, 7, 35, 49, 245.prime factors of 245: 5 & 7sum of prime factors of 245: 5 + 7 = 12
245 = 5*7*7 or 5*72
5 x 7 x 7 = 245
245 = 5*7*7 or 5*72
By dividing your number by prime numbers until all the factors are prime. 210 105,2 35,3,2 7,5,3,2
23x19
245 = 5 × 72
13,2,4,7,3,1,8,358,24,27,792,45,89,32 and 97.
152 = 2x2x2x19.2,2,2,19
The answer is 2x5x2 3
2*5*19
1, 2 and 13
3*3*7