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Greatest Common Factor and Least Common Multiple     Calculator Instructions:

Enter the 2 numbers you want to evaluate and press the appropriate button
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GCF of 25 and 30
GREATEST COMMON FACTOR 60,75
least common multiple of 50 AND 80
lcm 50,70
l.c.m. 80 and 95
g.c.f 50,100
GCF of 15 and 20 and 30
are 3 and 5 twin prime
are 20 and 29 coprime
lcd of 20 and 25
    
Number 1Number 2(Optional) Enter Number 3
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Determine the Greatest Common Factor (GCF) of (448,987)

Determine the factors for 448 up to 448 since that is the minimum of the 2 numbers
1,2,4,7,8,14,16,28,32,56,64,112,224,448

Determine the factors for 987 up to 448 since that is the minimum of the 2 numbers
1,3,7,21,47,141,329

The common factors between them are 1,7
The greatest common factor between them is 7
Since the Greatest Common Factor of both numbers ≠ 1, the numbers are not relatively prime (co-prime)
Since the Greatest Common Factor of Both Numbers is both ≠ 1 and have a difference of two, the numbers are not twin prime






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Tags:  division, greatest common factor, least common multiple, prime factorization


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