λ
Sequence Observatory

1,825,555

5 × 233 × 1567
Deficient Odd Composite

Starting at 1,825,555, the Collatz iteration reaches 1 after 158 steps. The first transition is 5476666; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 5 × 233 × 1567
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,201,472
Proper Divisor Sum 375,917
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #1825553 ← → #1825591

Radix Representation

Decimal 1825555
Binary 110111101101100010011 (21 bits)
Octal 0o6755423
Hexadecimal 0x1BDB13

Divisor Catalog (8)

1 5 233 1,165 1,567 7,835 365,111 1,825,555

Collatz Trajectory (158 steps to reach 1)

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

1,825,555 5,476,666 2,738,333 8,215,000 4,107,500 2,053,750 1,026,875 3,080,626 1,540,313 4,620,940 2,310,470 1,155,235 3,465,706 1,732,853 5,198,560 2,599,280 1,299,640 649,820 324,910 162,455 487,366 243,683 731,050 365,525 1,096,576 548,288 274,144 137,072 68,536 34,268 17,134 8,567 25,702 12,851 38,554 19,277 57,832 28,916 14,458 7,229 21,688 10,844 5,422 2,711 8,134 4,067 12,202 6,101 18,304 9,152 4,576 2,288 1,144 572 286 143 430 215 646 323

More profiles

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