λ
Sequence Observatory

1,985,471

1985471
Deficient Odd Prime

Starting at 1,985,471, the Collatz iteration reaches 1 after 122 steps. The first transition is 5956414; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 1985471
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 1,985,472
Proper Divisor Sum 1
Digit Sum / Digital Root 35 (Root: 8)
Adjacent Primes #1985453 ← → #1985483

Radix Representation

Decimal 1985471
Binary 111100100101110111111 (21 bits)
Octal 0o7445677
Hexadecimal 0x1E4BBF

Divisor Catalog (2)

Collatz Trajectory (122 steps to reach 1)

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

1,985,471 5,956,414 2,978,207 8,934,622 4,467,311 13,401,934 6,700,967 20,102,902 10,051,451 30,154,354 15,077,177 45,231,532 22,615,766 11,307,883 33,923,650 16,961,825 50,885,476 25,442,738 12,721,369 38,164,108 19,082,054 9,541,027 28,623,082 14,311,541 42,934,624 21,467,312 10,733,656 5,366,828 2,683,414 1,341,707 4,025,122 2,012,561 6,037,684 3,018,842 1,509,421 4,528,264 2,264,132 1,132,066 566,033 1,698,100 849,050 424,525 1,273,576 636,788 318,394 159,197 477,592 238,796 119,398 59,699 179,098 89,549 268,648 134,324 67,162 33,581 100,744 50,372 25,186 12,593

More profiles

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