λ
Sequence Observatory

1,839,969

33 × 68147
Deficient Odd Composite

Starting at 1,839,969, the Collatz iteration reaches 1 after 308 steps. The first transition is 5519908; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 3^3 × 68147
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,725,920
Proper Divisor Sum 885,951
Digit Sum / Digital Root 45 (Root: 9)
Adjacent Primes #1839967 ← → #1839983

Radix Representation

Decimal 1839969
Binary 111000001001101100001 (21 bits)
Octal 0o7011541
Hexadecimal 0x1C1361

Divisor Catalog (8)

1 3 9 27 68,147 204,441 613,323 1,839,969

Collatz Trajectory (308 steps to reach 1)

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

1,839,969 5,519,908 2,759,954 1,379,977 4,139,932 2,069,966 1,034,983 3,104,950 1,552,475 4,657,426 2,328,713 6,986,140 3,493,070 1,746,535 5,239,606 2,619,803 7,859,410 3,929,705 11,789,116 5,894,558 2,947,279 8,841,838 4,420,919 13,262,758 6,631,379 19,894,138 9,947,069 29,841,208 14,920,604 7,460,302 3,730,151 11,190,454 5,595,227 16,785,682 8,392,841 25,178,524 12,589,262 6,294,631 18,883,894 9,441,947 28,325,842 14,162,921 42,488,764 21,244,382 10,622,191 31,866,574 15,933,287 47,799,862 23,899,931 71,699,794 35,849,897 107,549,692 53,774,846 26,887,423 80,662,270 40,331,135 120,993,406 60,496,703 181,490,110 90,745,055

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