λ
Sequence Observatory

254,858

2 × 61 × 2089
Deficient Even Composite

Starting at 254,858, the Collatz iteration reaches 1 after 31 steps. The first transition is 127429; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 61 × 2089
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 388,740
Proper Divisor Sum 133,882
Digit Sum / Digital Root 32 (Root: 5)
Adjacent Primes #254857 ← → #254869

Radix Representation

Decimal 254858
Binary 111110001110001010 (18 bits)
Octal 0o761612
Hexadecimal 0x3E38A

Divisor Catalog (8)

1 2 61 122 2,089 4,178 127,429 254,858

Collatz Trajectory (31 steps to reach 1)

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

254,858 127,429 382,288 191,144 95,572 47,786 23,893 71,680 35,840 17,920 8,960 4,480 2,240 1,120 560 280 140 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1

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