λ
Sequence Observatory

478,869

3 × 159623
Deficient Odd Composite

Starting at 478,869, the Collatz iteration reaches 1 after 107 steps. The first transition is 1436608; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 3 × 159623
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 638,496
Proper Divisor Sum 159,627
Digit Sum / Digital Root 42 (Root: 6)
Adjacent Primes #478861 ← → #478871

Radix Representation

Decimal 478869
Binary 1110100111010010101 (19 bits)
Octal 0o1647225
Hexadecimal 0x74E95

Divisor Catalog (4)

1 3 159,623 478,869

Collatz Trajectory (107 steps to reach 1)

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

478,869 1,436,608 718,304 359,152 179,576 89,788 44,894 22,447 67,342 33,671 101,014 50,507 151,522 75,761 227,284 113,642 56,821 170,464 85,232 42,616 21,308 10,654 5,327 15,982 7,991 23,974 11,987 35,962 17,981 53,944 26,972 13,486 6,743 20,230 10,115 30,346 15,173 45,520 22,760 11,380 5,690 2,845 8,536 4,268 2,134 1,067 3,202 1,601 4,804 2,402 1,201 3,604 1,802 901 2,704 1,352 676 338 169 508

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