λ
Sequence Observatory

8,212,868

22 × 421 × 4877
Deficient Even Composite

Starting at 8,212,868, the Collatz iteration reaches 1 after 106 steps. The first transition is 4106434; the starting value is even with 12 positive divisors.

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Prime Factor Structure

Factorization String 2^2 × 421 × 4877
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 14,409,612
Proper Divisor Sum 6,196,744
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #8212849 ← → #8212873

Radix Representation

Decimal 8212868
Binary 11111010101000110000100 (23 bits)
Octal 0o37250604
Hexadecimal 0x7D5184

Divisor Catalog (5 of 12)

1 2 4 421 842

Collatz Trajectory (106 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.

8,212,868 4,106,434 2,053,217 6,159,652 3,079,826

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