λ
Sequence Observatory

1,609,535

5 × 487 × 661
Deficient Odd Composite

Starting at 1,609,535, the Collatz iteration reaches 1 after 145 steps. The first transition is 4828606; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 5 × 487 × 661
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 1,938,336
Proper Divisor Sum 328,801
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #1609523 ← → #1609549

Radix Representation

Decimal 1609535
Binary 110001000111100111111 (21 bits)
Octal 0o6107477
Hexadecimal 0x188F3F

Divisor Catalog (8)

1 5 487 661 2,435 3,305 321,907 1,609,535

Collatz Trajectory (145 steps to reach 1)

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

1,609,535 4,828,606 2,414,303 7,242,910 3,621,455 10,864,366 5,432,183 16,296,550 8,148,275 24,444,826 12,222,413 36,667,240 18,333,620 9,166,810 4,583,405 13,750,216 6,875,108 3,437,554 1,718,777 5,156,332 2,578,166 1,289,083 3,867,250 1,933,625 5,800,876 2,900,438 1,450,219 4,350,658 2,175,329 6,525,988 3,262,994 1,631,497 4,894,492 2,447,246 1,223,623 3,670,870 1,835,435 5,506,306 2,753,153 8,259,460 4,129,730 2,064,865 6,194,596 3,097,298 1,548,649 4,645,948 2,322,974 1,161,487 3,484,462 1,742,231 5,226,694 2,613,347 7,840,042 3,920,021 11,760,064 5,880,032 2,940,016 1,470,008 735,004 367,502

More profiles

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