LCM for 28 and 245
"Least Common Multiple" Calculator
What's the Least Common Multiple (LCM) of 28 and 245?
(Nine hundred eighty)
Finding LCM for 28 and 245 using GCF's of these numbers
The first method to find LCM for numbers 28 and 245 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:
LCM = (Number1 × Number2) ÷ GCF
GCF of numbers 28 and 245 is 7, so
LCM = (28 × 245) ÷ 7
LCM = 6860 ÷ 7
LCM = 980
Finding LCM for 28 and 245 by Listing Multiples
The second method to find LCM for numbers 28 and 245 is to list out the common multiples for both nubmers and pick the first which matching:
Multiples of 28: 28, 56, 84, 112, 140, 168, 196, 224, 252, 280, 308, 336, 364, 392, 420, 448, 476, 504, 532, 560, 588, 616, 644, 672, 700, 728, 756, 784, 812, 840, 868, 896, 924, 952, 980, 1008, 1036
Multiples of 245: 245, 490, 735, 980, 1225, 1470
So the LCM for 28 and 245 is 980
Finding LCM for 28 and 245 by Prime Factorization
Another method to find LCM for numbers 28 and 245 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:
All Prime Factors of 28: 2, 2, 7 (exponent form: 22, 71)
All Prime Factors of 245: 5, 7, 7 (exponent form: 51, 72)
22 × 72 × 51 = 980
About "Least Common Multiple" Calculator
Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers
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What's the Least Common Multiple (LCM) of 28 and 245?
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- Наименьшее общее кратное 28 и 245