λ
Sequence Observatory

1,782,661

23 × 179 × 433
Deficient Odd Composite

Starting at 1,782,661, the Collatz iteration reaches 1 after 145 steps. The first transition is 5347984; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 23 × 179 × 433
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 1,874,880
Proper Divisor Sum 92,219
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #1782647 ← → #1782667

Radix Representation

Decimal 1782661
Binary 110110011001110000101 (21 bits)
Octal 0o6631605
Hexadecimal 0x1B3385

Divisor Catalog (8)

1 23 179 433 4,117 9,959 77,507 1,782,661

Collatz Trajectory (145 steps to reach 1)

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

1,782,661 5,347,984 2,673,992 1,336,996 668,498 334,249 1,002,748 501,374 250,687 752,062 376,031 1,128,094 564,047 1,692,142 846,071 2,538,214 1,269,107 3,807,322 1,903,661 5,710,984 2,855,492 1,427,746 713,873 2,141,620 1,070,810 535,405 1,606,216 803,108 401,554 200,777 602,332 301,166 150,583 451,750 225,875 677,626 338,813 1,016,440 508,220 254,110 127,055 381,166 190,583 571,750 285,875 857,626 428,813 1,286,440 643,220 321,610 160,805 482,416 241,208 120,604 60,302 30,151 90,454 45,227 135,682 67,841

More profiles

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