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24: 2, 3
25: 5
26: 2, 13
27: 3
28: 2, 7
29: 29
30: 2, 3, 5
31: 31
32: 2
33: 3, 11
34: 2, 17
35: 5, 7
36: 2, 3
37: 37
38: 2, 19
39: 3, 13
40: 2, 5
41: 41
42: 2, 3, 7
43: 43
44: 2, 11
45: 3, 5
46: 2, 23
47: 47
48: 2, 3
49: 7
50: 2, 5
51: 3, 17
52: 2, 13
53: 53
54: 2, 3
55: 5, 11
56: 2, 7
57: 3, 19
58: 2, 29
59: 59
60: 2, 3, 5
61: 61
62: 2, 31
63: 3, 7
64: 2
65: 5, 13
66: 2, 3, 11
67: 67
68: 2, 17
69: 3, 23
70: 2, 5, 7
71: 71
72: 2, 3
73: 73
74: 2, 37
75: 3, 5
76: 2, 19
77: 7, 11
78: 2, 3, 13
79: 79
80: 2, 5
81: 3
82: 2, 41
83: 83
84: 2, 3, 7
85: 5, 17
86: 2, 43
87: 3, 29
88: 2, 11
89: 89
90: 2, 3, 5
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What are the prime factors in common of 18 and 90?
The prime factors of 18 are 2, 3, and 3. The prime factors of 90 are 2, 3, 3, and 5. The prime factors they have in common are 2, 3, and 3. Since 18 is a factor of 90, its prime factors will be the prime factors that the two numbers have in common.
What is the HCF of 24 and 90?
Factors of 24: 1,2,3,4,6,8,12 and 24. Factors of 90: 1,2,3,5,9,10,18,30,45 and 90. The HCF (highest common factor) is 3.
What multiplication facts equal 90?
As a product of its prime factors: 2*3*3*5 = 90
Is 1 the greatest common factor of 42 and 90?
No, it is 6. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90. The common factors are 1, 2, 3, and 6, so the greatest common factor is 6. You can also determine this by looking at the prime factors. The prime factors of 42 are 2, 3, and 7. The prime factors of 90 are 2, 3, 3, and 5. The prime factors they have in common are 2 and 3, so the greatest common factor is 2 x 3 = 6.
Prime factorization of 90?
Prime factorization of 90 = 2x3x3x5
