λ
Sequence Observatory

2,687,850

2 × 33 × 52 × 11 × 181
Abundant Even Composite

Starting at 2,687,850, the Collatz iteration reaches 1 after 94 steps. The first transition is 1343925; the starting value is even with 96 positive divisors.

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Prime Factor Structure

Factorization String 2 × 3^3 × 5^2 × 11 × 181
Distinct Prime Factors 5
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 96
Divisor Sum (σ) 8,124,480
Proper Divisor Sum 5,436,630
Digit Sum / Digital Root 36 (Root: 9)
Adjacent Primes #2687827 ← → #2687851

Radix Representation

Decimal 2687850
Binary 1010010000001101101010 (22 bits)
Octal 0o12201552
Hexadecimal 0x29036A

Divisor Catalog (5 of 96)

1 2 3 5 6

Collatz Trajectory (94 steps to reach 1)

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

Showing the first 5 trajectory entries; the stopping-time total above is unchanged.

2,687,850 1,343,925 4,031,776 2,015,888 1,007,944

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