λ
Sigma Notebook

170,005

5 × 112 × 281
Deficient Odd Composite

170,005 is odd and not a perfect square. Its factorization is 5 × 11^2 × 281 and its 12 divisors sum to 225,036.

Prime Factor Structure

Factorization String 5 × 11^2 × 281
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 225,036
Proper Divisor Sum 55,031
Digit Sum / Digital Root 13 (Root: 4)
Adjacent Primes #170003 ← → #170021

Radix Representation

Decimal 170005
Binary 101001100000010101 (18 bits)
Octal 0o514025
Hexadecimal 0x29815

Divisor Catalog (12)

1 5 11 55 121 281 605 1,405 3,091 15,455 34,001 170,005

Collatz Trajectory (59 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

170,005 510,016 255,008 127,504 63,752 31,876 15,938 7,969 23,908 11,954 5,977 17,932 8,966 4,483 13,450 6,725 20,176 10,088 5,044 2,522 1,261 3,784 1,892 946 473 1,420 710 355 1,066 533 1,600 800 400 200 100 50 25 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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