LCM for 7 and 343

The first method to find LCM for numbers 7 and 343 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 7 and 343 is 7, so

LCM = (7 × 343) ÷ 7

LCM = 2401 ÷ 7

LCM = 343

The second method to find LCM for numbers 7 and 343 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105, 112, 119, 126, 133, 140, 147, 154, 161, 168, 175, 182, 189, 196, 203, 210, 217, 224, 231, 238, 245, 252, 259, 266, 273, 280, 287, 294, 301, 308, 315, 322, 329, 336, 343, 350, 357

Multiples of 343: 343, 686, 1029, 1372, 1715, 2058, 2401, 2744, 3087, 3430, 3773, 4116, 4459, 4802, 5145, 5488, 5831, 6174, 6517, 6860, 7203, 7546, 7889, 8232, 8575, 8918, 9261, 9604, 9947, 10290, 10633, 10976, 11319, 11662, 12005, 12348, 12691, 13034, 13377, 13720, 14063, 14406, 14749, 15092, 15435, 15778, 16121, 16464, 16807, 17150, 17493, [...], 343

So the LCM for 7 and 343 is 343

Another method to find LCM for numbers 7 and 343 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors: