λ
Sequence Observatory

247,370

2 × 5 × 29 × 853
Deficient Even Composite

Starting at 247,370, the Collatz iteration reaches 1 after 150 steps. The first transition is 123685; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 29 × 853
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 461,160
Proper Divisor Sum 213,790
Digit Sum / Digital Root 23 (Root: 5)
Adjacent Primes #247369 ← → #247381

Radix Representation

Decimal 247370
Binary 111100011001001010 (18 bits)
Octal 0o743112
Hexadecimal 0x3C64A

Divisor Catalog (16)

Collatz Trajectory (150 steps to reach 1)

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

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