λ
Sequence Observatory

108,416

27 × 7 × 112
Abundant Even Composite

Starting at 108,416, the Collatz iteration reaches 1 after 40 steps. The first transition is 54208; the starting value is even with 48 positive divisors.

Prime Factor Structure

Factorization String 2^7 × 7 × 11^2
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 48
Divisor Sum (σ) 271,320
Proper Divisor Sum 162,904
Digit Sum / Digital Root 20 (Root: 2)
Adjacent Primes #108413 ← → #108421

Radix Representation

Decimal 108416
Binary 11010011110000000 (17 bits)
Octal 0o323600
Hexadecimal 0x1A780

Divisor Catalog (48)

1 2 4 7 8 11 14 16 22 28 32 44 56 64 77 88 112 121 128 154 176 224 242 308 352 448 484 616 704 847 896 968 1,232 1,408 1,694 1,936 2,464 3,388 3,872 4,928 6,776 7,744 9,856 13,552 15,488 27,104 54,208 108,416

Collatz Trajectory (40 steps to reach 1)

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

108,416 54,208 27,104 13,552 6,776 3,388 1,694 847 2,542 1,271 3,814 1,907 5,722 2,861 8,584 4,292 2,146 1,073 3,220 1,610 805 2,416 1,208 604 302 151 454 227 682 341 1,024 512 256 128 64 32 16 8 4 2 1

More profiles

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