λ
Sequence Observatory

2,579,705

5 × 515941
Deficient Odd Composite

Starting at 2,579,705, the Collatz iteration reaches 1 after 218 steps. The first transition is 7739116; the starting value is odd with 4 positive divisors.

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Prime Factor Structure

Factorization String 5 × 515941
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 3,095,652
Proper Divisor Sum 515,947
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #2579693 ← → #2579711

Radix Representation

Decimal 2579705
Binary 1001110101110011111001 (22 bits)
Octal 0o11656371
Hexadecimal 0x275CF9

Divisor Catalog (4)

1 5 515,941 2,579,705

Collatz Trajectory (218 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.

2,579,705 7,739,116 3,869,558 1,934,779 5,804,338

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