λ
Sequence Observatory

1,659,018

2 × 3 × 276503
Abundant Even Composite

Starting at 1,659,018, the Collatz iteration reaches 1 after 57 steps. The first transition is 829509; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 3 × 276503
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 3,318,048
Proper Divisor Sum 1,659,030
Digit Sum / Digital Root 30 (Root: 3)
Adjacent Primes #1659011 ← → #1659029

Radix Representation

Decimal 1659018
Binary 110010101000010001010 (21 bits)
Octal 0o6250212
Hexadecimal 0x19508A

Divisor Catalog (8)

1 2 3 6 276,503 553,006 829,509 1,659,018

Collatz Trajectory (57 steps to reach 1)

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

1,659,018 829,509 2,488,528 1,244,264 622,132 311,066 155,533 466,600 233,300 116,650 58,325 174,976 87,488 43,744 21,872 10,936 5,468 2,734 1,367 4,102 2,051 6,154 3,077 9,232 4,616 2,308 1,154 577 1,732 866 433 1,300 650 325 976 488 244 122 61 184 92 46 23 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1

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