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2,678,221

7 × 13 × 19 × 1549
Deficient Odd Composite

Prime Factor Structure

Factorization String 7 × 13 × 19 × 1549
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 3,472,000
Proper Divisor Sum 793,779
Digit Sum / Digital Root 28 (Root: 1)
Adjacent Primes #2678219 ← → #2678227

Radix Representation

Decimal 2678221
Binary 1010001101110111001101 (22 bits)
Octal 0o12156715
Hexadecimal 0x28DDCD

Divisor Catalog (16)

1 7 13 19 91 133 247 1,549 1,729 10,843 20,137 29,431 140,959 206,017 382,603 2,678,221

Collatz Trajectory (63 steps to reach 1)

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

2,678,221 8,034,664 4,017,332 2,008,666 1,004,333 3,013,000 1,506,500 753,250 376,625 1,129,876 564,938 282,469 847,408 423,704 211,852 105,926 52,963 158,890 79,445 238,336 119,168 59,584 29,792 14,896 7,448 3,724 1,862 931 2,794 1,397 4,192 2,096 1,048 524 262 131 394 197 592 296 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16

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