λ
Sequence Observatory

6,215,509

983 × 6323
Deficient Odd Composite

Starting at 6,215,509, the Collatz iteration reaches 1 after 59 steps. The first transition is 18646528; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 983 × 6323
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 6,222,816
Proper Divisor Sum 7,307
Digit Sum / Digital Root 28 (Root: 1)
Adjacent Primes #6215501 ← → #6215533

Radix Representation

Decimal 6215509
Binary 10111101101011101010101 (23 bits)
Octal 0o27553525
Hexadecimal 0x5ED755

Divisor Catalog (4)

1 983 6,323 6,215,509

Collatz Trajectory (59 steps to reach 1)

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

6,215,509 18,646,528 9,323,264 4,661,632 2,330,816 1,165,408 582,704 291,352 145,676 72,838 36,419 109,258 54,629 163,888 81,944 40,972 20,486 10,243 30,730 15,365 46,096 23,048 11,524 5,762 2,881 8,644 4,322 2,161 6,484 3,242 1,621 4,864 2,432 1,216 608 304 152 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

More profiles

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