λ
Sequence Observatory

6,403,115

5 × 1280623
Deficient Odd Composite

Starting at 6,403,115, the Collatz iteration reaches 1 after 95 steps. The first transition is 19209346; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 5 × 1280623
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 7,683,744
Proper Divisor Sum 1,280,629
Digit Sum / Digital Root 20 (Root: 2)
Adjacent Primes #6403063 ← → #6403127

Radix Representation

Decimal 6403115
Binary 11000011011010000101011 (23 bits)
Octal 0o30332053
Hexadecimal 0x61B42B

Divisor Catalog (4)

1 5 1,280,623 6,403,115

Collatz Trajectory (95 steps to reach 1)

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

6,403,115 19,209,346 9,604,673 28,814,020 14,407,010 7,203,505 21,610,516 10,805,258 5,402,629 16,207,888 8,103,944 4,051,972 2,025,986 1,012,993 3,038,980 1,519,490 759,745 2,279,236 1,139,618 569,809 1,709,428 854,714 427,357 1,282,072 641,036 320,518 160,259 480,778 240,389 721,168 360,584 180,292 90,146 45,073 135,220 67,610 33,805 101,416 50,708 25,354 12,677 38,032 19,016 9,508 4,754 2,377 7,132 3,566 1,783 5,350 2,675 8,026 4,013 12,040 6,020 3,010 1,505 4,516 2,258 1,129

More profiles

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