5,643,143

11 × 513013

Starting at 5,643,143, the Collatz iteration reaches 1 after 170 steps. The first transition is 16929430; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 11 × 513013

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 6,156,168

Proper Divisor Sum 513,025

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #5643137 ← → #5643161

Radix Representation

Decimal	5643143
Binary	10101100001101110000111 (23 bits)
Octal	0o25415607
Hexadecimal	0x561B87

Divisor Catalog (4)

1 11 513,013 5,643,143

Collatz Trajectory (170 steps to reach 1)

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

5,643,143 16,929,430 8,464,715 25,394,146 12,697,073 38,091,220 19,045,610 9,522,805 28,568,416 14,284,208 7,142,104 3,571,052 1,785,526 892,763 2,678,290 1,339,145 4,017,436 2,008,718 1,004,359 3,013,078 1,506,539 4,519,618 2,259,809 6,779,428 3,389,714 1,694,857 5,084,572 2,542,286 1,271,143 3,813,430 1,906,715 5,720,146 2,860,073 8,580,220 4,290,110 2,145,055 6,435,166 3,217,583 9,652,750 4,826,375 14,479,126 7,239,563 21,718,690 10,859,345 32,578,036 16,289,018 8,144,509 24,433,528 12,216,764 6,108,382 3,054,191 9,162,574 4,581,287 13,743,862 6,871,931 20,615,794 10,307,897 30,923,692 15,461,846 7,730,923

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