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what is the gcd of 2001 and 6837?
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2 Answers
Factors for 2001 are 1, 3, 23, 29, 69, 87, 667 and 2001
Factors for 6837 which has any of the above is only 3, so GCD is 3.
2001 = 1*3*23*29
6837 = 1*3*43*53
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GCD
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If sum of all digits in the number is divisible by 3 or 9 that whole number is dividable by 3 or 9:
2+0+0+1=3
6+8+3+7=24
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