λ
Sequence Observatory

7,205,779

7 × 619 × 1663
Deficient Odd Composite

Starting at 7,205,779, the Collatz iteration reaches 1 after 173 steps. The first transition is 21617338; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 7 × 619 × 1663
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 8,253,440
Proper Divisor Sum 1,047,661
Digit Sum / Digital Root 37 (Root: 1)
Adjacent Primes #7205771 ← → #7205797

Radix Representation

Decimal 7205779
Binary 11011011111001110010011 (23 bits)
Octal 0o33371623
Hexadecimal 0x6DF393

Divisor Catalog (8)

1 7 619 1,663 4,333 11,641 1,029,397 7,205,779

Collatz Trajectory (173 steps to reach 1)

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

7,205,779 21,617,338 10,808,669 32,426,008 16,213,004 8,106,502 4,053,251 12,159,754 6,079,877 18,239,632 9,119,816 4,559,908 2,279,954 1,139,977 3,419,932 1,709,966 854,983 2,564,950 1,282,475 3,847,426 1,923,713 5,771,140 2,885,570 1,442,785 4,328,356 2,164,178 1,082,089 3,246,268 1,623,134 811,567 2,434,702 1,217,351 3,652,054 1,826,027 5,478,082 2,739,041 8,217,124 4,108,562 2,054,281 6,162,844 3,081,422 1,540,711 4,622,134 2,311,067 6,933,202 3,466,601 10,399,804 5,199,902 2,599,951 7,799,854 3,899,927 11,699,782 5,849,891 17,549,674 8,774,837 26,324,512 13,162,256 6,581,128 3,290,564 1,645,282

More profiles

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