λ
Sequence Observatory

358,649

173 × 73
Deficient Odd Composite

Starting at 358,649, the Collatz iteration reaches 1 after 179 steps. The first transition is 1075948; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 17^3 × 73
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 386,280
Proper Divisor Sum 27,631
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #358637 ← → #358667

Radix Representation

Decimal 358649
Binary 1010111100011111001 (19 bits)
Octal 0o1274371
Hexadecimal 0x578F9

Divisor Catalog (8)

1 17 73 289 1,241 4,913 21,097 358,649

Collatz Trajectory (179 steps to reach 1)

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

358,649 1,075,948 537,974 268,987 806,962 403,481 1,210,444 605,222 302,611 907,834 453,917 1,361,752 680,876 340,438 170,219 510,658 255,329 765,988 382,994 191,497 574,492 287,246 143,623 430,870 215,435 646,306 323,153 969,460 484,730 242,365 727,096 363,548 181,774 90,887 272,662 136,331 408,994 204,497 613,492 306,746 153,373 460,120 230,060 115,030 57,515 172,546 86,273 258,820 129,410 64,705 194,116 97,058 48,529 145,588 72,794 36,397 109,192 54,596 27,298 13,649

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