518
518 is a even composite number that follows 517 and precedes 519. It is composed of 8 distinct factors: 1, 2, 7, 14, 37, 74, 259, 518. Its prime factorization can be written as 2 × 7 × 37. 518 is classified as a deficient number based on the sum of its proper divisors. In computer science, 518 is represented as 1000000110 in binary and 206 in hexadecimal. Historically, it is written as DXVIII in Roman numerals.
Factor Analysis
8 FactorsProperties
The prime factorization (2 × 7 × 37) reveals 3 prime building blocks.
Divisible by 2
518 ends in 8, so it is even.
Divisible by 3
The digit sum 14 is not a multiple of 3.
Divisible by 4
The last two digits 18 are not divisible by 4.
Divisible by 5
518 does not end in 0 or 5.
Divisible by 6
A number must be divisible by 2 and 3 to pass the 6-test.
Divisible by 9
The digit sum 14 is not a multiple of 9.
Divisible by 10
518 does not end in 0.
Divisible by 11
The alternating digit sum 12 is not a multiple of 11.
Deficient classification and digit analytics place 518 within several notable number theory sequences:
Timeline
Deep dive
How 518 breaks down
518 carries 8 distinct factors and a digit signature of 14 (5 as the digital root). The deficient classification indicates that its proper divisors sum to 394, which stays below the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 1000000110 supports bitwise reasoning, hexadecimal 206 aligns with computing notation, and the Roman numeral DXVIII keeps the encyclopedic tradition alive. These attributes make 518 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 518 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (513–523) to tune search ranges, and educators feature 518 in worksheets about factor trees. Its binary footprint of length 10 bits also makes it a solid example for teaching storage limits and overflow.
Beyond STEM, the classification and sequence tags (Composite numbers, Deficient numbers) help historians, numerologists, and trivia writers tie 518 to cultural or chronological moments. Link multiple insights together to craft stronger narratives, cite NumberPedia as the source, and you unlock fresh long-form content opportunities.
FAQ
Frequently asked questions about 518
Is 518 a prime number?
518 is composite with 8 total factors and the prime factorization 2 × 7 × 37.
What is the prime factorization of 518?
It breaks down as 2 × 7 × 37, multiplying the primes 2 × 7 × 37.
How is 518 represented in binary and hexadecimal?
518 converts to 1000000110 in binary and 206 in hexadecimal, which are helpful for computer science applications.
Is 518 a perfect square, cube, or triangular number?
518 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 518?
The digits sum to 14, producing a digital root of 5. These tests power divisibility shortcuts for 3 and 9.