λ
Sequence Observatory

551,230

2 × 5 × 199 × 277
Deficient Even Composite

Starting at 551,230, the Collatz iteration reaches 1 after 146 steps. The first transition is 275615; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 199 × 277
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 1,000,800
Proper Divisor Sum 449,570
Digit Sum / Digital Root 16 (Root: 7)
Adjacent Primes #551219 ← → #551231

Radix Representation

Decimal 551230
Binary 10000110100100111110 (20 bits)
Octal 0o2064476
Hexadecimal 0x8693E

Divisor Catalog (16)

1 2 5 10 199 277 398 554 995 1,385 1,990 2,770 55,123 110,246 275,615 551,230

Collatz Trajectory (146 steps to reach 1)

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

551,230 275,615 826,846 413,423 1,240,270 620,135 1,860,406 930,203 2,790,610 1,395,305 4,185,916 2,092,958 1,046,479 3,139,438 1,569,719 4,709,158 2,354,579 7,063,738 3,531,869 10,595,608 5,297,804 2,648,902 1,324,451 3,973,354 1,986,677 5,960,032 2,980,016 1,490,008 745,004 372,502 186,251 558,754 279,377 838,132 419,066 209,533 628,600 314,300 157,150 78,575 235,726 117,863 353,590 176,795 530,386 265,193 795,580 397,790 198,895 596,686 298,343 895,030 447,515 1,342,546 671,273 2,013,820 1,006,910 503,455 1,510,366 755,183

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