LCM for 30 and 405

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What's the Least Common Multiple (LCM) of 30 and 405?

Answer

LCM of 30 and 405 is
810

First common multiples: 810; 1,620; 2,430; …

810 is divisible by both: 810 ÷ 30 = 27, 810 ÷ 405 = 2 — and 27 and 2 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/30 by 27 and of y/405 by 2.

30 = 2 × 3 × 5

405 = 34 × 5

Prime30405Highest power
22—2
333434
5555

— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.

LCM = 2 × 34 × 5 = 810

More with these numbers

See Also

LCM Table

Number 1Number 2LCM
30145870
30155930
30165330
30170510
30180180
301851,110
30195390
302151,290
302351,410
302383,570
30240240
302451,470
30255510
30270270
302751,650
30280840
30285570
30290870
303352,010
303552,130
303652,190
303701,110
30390390
304001,200
30405810
30420420
30435870
304452,670
30450450
30495990

FAQ

What's the Least Common Multiple (LCM) of 30 and 405?

LCM of 30 and 405 is 810

How to find the LCM of 30 and 405 using prime factorization?

To find the LCM of 30 and 405, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 810.

What is the difference between LCM and GCF?

LCM (Least Common Multiple) is the smallest number divisible by both numbers, while GCF (Greatest Common Factor) is the largest number that divides both. For 30 and 405: LCM = 810, GCF = 15.

See Also