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What is the Greatest Common Factor of 65520 and 65538?

Greatest common factor (GCF) of 65520 and 65538 is 18.

GCF(65520,65538) = 18

We will now calculate the prime factors of 65520 and 65538, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 65520 and 65538.

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How to find the GCF of 65520 and 65538?

We will first find the prime factorization of 65520 and 65538. After we will calculate the factors of 65520 and 65538 and find the biggest common factor number .

Step-1: Prime Factorization of 65520

Prime factors of 65520 are 2, 3, 5, 7, 13. Prime factorization of 65520 in exponential form is:

65520 = 24 × 32 × 51 × 71 × 131

Step-2: Prime Factorization of 65538

Prime factors of 65538 are 2, 3, 11, 331. Prime factorization of 65538 in exponential form is:

65538 = 21 × 32 × 111 × 3311

Step-3: Factors of 65520

List of positive integer factors of 65520 that divides 65520 without a remainder.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 48, 52, 56, 60, 63, 65, 70, 72, 78, 80, 84, 90, 91, 104, 105, 112, 117, 120, 126, 130, 140, 144, 156, 168, 180, 182, 195, 208, 210, 234, 240, 252, 260, 273, 280, 312, 315, 336, 360, 364, 390, 420, 455, 468, 504, 520, 546, 560, 585, 624, 630, 720, 728, 780, 819, 840, 910, 936, 1008, 1040, 1092, 1170, 1260, 1365, 1456, 1560, 1638, 1680, 1820, 1872, 2184, 2340, 2520, 2730, 3120, 3276, 3640, 4095, 4368, 4680, 5040, 5460, 6552, 7280, 8190, 9360, 10920, 13104, 16380, 21840, 32760

Step-4: Factors of 65538

List of positive integer factors of 65538 that divides 65520 without a remainder.

1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 331, 662, 993, 1986, 2979, 3641, 5958, 7282, 10923, 21846, 32769

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 65520 and 65538. The biggest common factor number is the GCF number.
So the greatest common factor 65520 and 65538 is 18.

Also check out the Least Common Multiple of 65520 and 65538