λ
Sequence Observatory

1,965,891

3 × 613 × 1069
Deficient Odd Composite

Starting at 1,965,891, the Collatz iteration reaches 1 after 140 steps. The first transition is 5897674; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 3 × 613 × 1069
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,627,920
Proper Divisor Sum 662,029
Digit Sum / Digital Root 39 (Root: 3)
Adjacent Primes #1965889 ← → #1965893

Radix Representation

Decimal 1965891
Binary 111011111111101000011 (21 bits)
Octal 0o7377503
Hexadecimal 0x1DFF43

Divisor Catalog (8)

1 3 613 1,069 1,839 3,207 655,297 1,965,891

Collatz Trajectory (140 steps to reach 1)

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

1,965,891 5,897,674 2,948,837 8,846,512 4,423,256 2,211,628 1,105,814 552,907 1,658,722 829,361 2,488,084 1,244,042 622,021 1,866,064 933,032 466,516 233,258 116,629 349,888 174,944 87,472 43,736 21,868 10,934 5,467 16,402 8,201 24,604 12,302 6,151 18,454 9,227 27,682 13,841 41,524 20,762 10,381 31,144 15,572 7,786 3,893 11,680 5,840 2,920 1,460 730 365 1,096 548 274 137 412 206 103 310 155 466 233 700 350

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