λ
Sequence Observatory

787,109

47 × 16747
Deficient Odd Composite

Starting at 787,109, the Collatz iteration reaches 1 after 100 steps. The first transition is 2361328; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 47 × 16747
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 803,904
Proper Divisor Sum 16,795
Digit Sum / Digital Root 32 (Root: 5)
Adjacent Primes #787099 ← → #787123

Radix Representation

Decimal 787109
Binary 11000000001010100101 (20 bits)
Octal 0o3001245
Hexadecimal 0xC02A5

Divisor Catalog (4)

1 47 16,747 787,109

Collatz Trajectory (100 steps to reach 1)

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

787,109 2,361,328 1,180,664 590,332 295,166 147,583 442,750 221,375 664,126 332,063 996,190 498,095 1,494,286 747,143 2,241,430 1,120,715 3,362,146 1,681,073 5,043,220 2,521,610 1,260,805 3,782,416 1,891,208 945,604 472,802 236,401 709,204 354,602 177,301 531,904 265,952 132,976 66,488 33,244 16,622 8,311 24,934 12,467 37,402 18,701 56,104 28,052 14,026 7,013 21,040 10,520 5,260 2,630 1,315 3,946 1,973 5,920 2,960 1,480 740 370 185 556 278 139

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