λ
Sequence Observatory

1,497,391

72 × 30559
Deficient Odd Composite

Starting at 1,497,391, the Collatz iteration reaches 1 after 75 steps. The first transition is 4492174; the starting value is odd with 6 positive divisors.

Prime Factor Structure

Factorization String 7^2 × 30559
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 6
Divisor Sum (σ) 1,741,920
Proper Divisor Sum 244,529
Digit Sum / Digital Root 34 (Root: 7)
Adjacent Primes #1497359 ← → #1497407

Radix Representation

Decimal 1497391
Binary 101101101100100101111 (21 bits)
Octal 0o5554457
Hexadecimal 0x16D92F

Divisor Catalog (6)

1 7 49 30,559 213,913 1,497,391

Collatz Trajectory (75 steps to reach 1)

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

1,497,391 4,492,174 2,246,087 6,738,262 3,369,131 10,107,394 5,053,697 15,161,092 7,580,546 3,790,273 11,370,820 5,685,410 2,842,705 8,528,116 4,264,058 2,132,029 6,396,088 3,198,044 1,599,022 799,511 2,398,534 1,199,267 3,597,802 1,798,901 5,396,704 2,698,352 1,349,176 674,588 337,294 168,647 505,942 252,971 758,914 379,457 1,138,372 569,186 284,593 853,780 426,890 213,445 640,336 320,168 160,084 80,042 40,021 120,064 60,032 30,016 15,008 7,504 3,752 1,876 938 469 1,408 704 352 176 88 44

More profiles

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